Opening Up iOS And Implications

In the 2016 WWDC Keynote, Apple showed how it was going to open up Siri, Messages and Maps. It also showed how it was going to allow VoIP apps to show incoming calls just like how the default Phone app does; using the full screen.

Now if this was just Messages, then we might think that this was in response to the popularity of messaging apps like WeChat which work as platforms. However, if you listen to the State of the Union presentation after the Keynote, then you learn that even Xcode has opened up. It then becomes apparent that this is not just a simple response to WeChat, but a deliberate iOS-wide and even Apple ecosystem-wide direction that Apple is coordinating with their extensions system.

This extension system is not something that is new. In fact, it is an extremely old idea that is more often referred to “plug-in”. It is the idea that allowed browsers to provide rich multimedia experiences before the advent of HTML5. It is the idea that allows programming editors like Eclipse to become very rich tools for a huge number of programming languages. It has already been proven that this mechanism allows programs to be used for occasions that were never envisioned by their original creators, and can be very useful and effective. Although it does tend to add a layer of complexity for the end user, it is undoubtedly a feature that can have widespread impact.

Given that the extensions are likely to be very popular, then it is worthwhile to try to predict how they will advantage Apple and/or dis-advantage its competitors.

  1. Let’s ponder whether Google would open up Maps for example. Would they let third party apps provide the restaurant and shop recommendations layered onto Google Maps? What would be the implications for their business model that depends on showing sponsored recommendations in a more prominent way?
  2. Would wireless carriers be happy with VoIP apps that can integrate into the iOS to behave in just the same way as the default Phone app?
  3. Would Amazon open up its store so that random online stores can integrate themselves in the categorical listings and search results?

Many of Apple’s competitors provide the app layer for free and monetise at the extension layer. Google Maps plans to monetise by providing advertisements relevant to your location, but the Apple Maps extensions will allow third parties to provide this instead of Apple. Similarly Amazon provides an online store website with good search, recommendations and reviews. It monetises when people actually make purchases, which is similar to the layer that Apple’s extensions live in.

What we see here is that Apple has created a powerful extensions mechanism ecosystem-wide, that is almost guaranteed to be popular, and which may conflict with the business models of Google, Amazon and many other competitors.

The implications will be interesting to watch.

Thoughts on WWDC 2016

Here I want to jot down some of my key thoughts after viewing Apple’s WWDC 2016 keynote.

Core Apps as platforms

We saw a lot of the core apps being opened up to developers. We saw this for Siri, Maps, Messages and even the regular Phone app. Developers can now write code that directly extends the functionality of these core apps. This makes each app its own platform.

  1. This provides a path through which Apple Maps may become much better than Google Maps for many parts of the world. Third parties can innovate on how to provide better shop recommendations/information, transit information, rather then replicating core functionality.
  2. The same can be said of VoIP apps. I have never had a VoIP app that had nearly as nice a UI as the iOS default Phone app. Now VoIP apps can simply focus on providing good connection and voice quality.
  3. Ditto for Siri and Messages.
  4. This approach is only possible in some cases because Apple’s business model does not rely on advertising. For example, Google Maps could have trouble integrating information from Yelp, because this would conflict with their business model of profiting from the recommendations.

Differential Privacy

This is still a bold experiment. It has not yet been proved that this will allow sufficiently advanced artificial intelligence. In the following months, this will be put to the test. Differential privacy may prove to be just as useful as the lax privacy that companies like Google employ.

More importantly in my view though, is that differential privacy will allow Apple to get the most valuable data.

Privacy of health data is considered to be very important, especially genomic data. In genomic experiments using human-derived samples, great care is often demanded to defend the privacy of the donor. Google’s approach would probably be considered too relaxed to entrust such data, whereas Apple’s differential privacy may be sufficient. As a result, people might be very hesitant to give Google their DNA sequence information but not so for Apple (it might even be an FDA recommendation).

If this becomes the case, then Apple will have a huge advantage, not because it has better AI algorithms or more data, but because it has the most valuable data.

The same may occur with many other types of data. If this becomes that case, then Apple may gain preferential access to the more valuable and important data (that is not readily available by spying on your interactions with your phone). This will benefit Apple in the kind of conclusions that its AI will be able to make.

Google’s Justification

At Google I/O 2016, CEO Sundar Pichai showed a future filled with their artificial intelligence (AI).   It is all very interesting, but I do have some questions.

How much data does Google’s AI need?

Google’s AI is backed by enormous amounts of data about us. Data that is collected from photos that are publicly posted onto the Internet, and from photos that we upload onto the Google Cloud services from our mobile phones. Data from our messages on Gmail or events on Google Calendar. Data from the GPSs on our Android phones which tell Google where we are every hour of the day. Data from our browsers which tell Google (often without us knowing it), which website we have been visiting. No other company has access to similar amounts of private information.

However, what has not been answered is how much data Google’s AI actually needs.

Can effective AI be created without too much data?

A recent article by Steve Kovach on Apple’s next generation AI system is very interesting.

Siri brings in 1 billion queries per week from users to help it get better. But VocalIQ was able to learn with just a few thousand queries and still beat Siri.

This suggests that it is possible to construct a advanced AI system with magnitudes smaller data sets; data sets that do not have to be aggregates of private user information, but can simply be collated from a relatively small number of people who were paid for the work.

Of course we need to see the results to be sure. At the same time, I find it interesting that IBM Watson was able to win Jeopardy without tapping into huge data sets like those that Google uses.

Does an intelligent assistant mean you have to give up your privacy?

Apple tries hard not to see your private data. Apple believes that your private data belongs to you only, and that you should be the only one who holds the keys. Many people have questioned this approach, based on the assumption that widespread access to private information from millions of people on the server level is the only way to create a sufficiently good AI system.

Apple’s approach does not preclude the storage and analysis of personal data, as long as it happens in a way that Apple itself cannot see. One way to do this is to handle analysis on the smartphone. This is what the NSDataDetector class in the Mac/iOS API does. It’s actually pretty neat, and Apple has a patent on it. Similar but more advanced approaches could easily be implemented in iOS, given the performance of today’s CPUs.

The question is, is this approach sufficient? Will analysing your private data on your device always be much less powerful than analysing it on the server? Furthermore, will there be a significant benefit in collating the private data from strangers to analyse your own? If so, then Google’s approach (which sacrifices your privacy) will remain significantly superior. If not, then Apple’s approach will suffice. That is, you will not necessarily have to give up your privacy to benefit from intelligent assistants.

Does Google need the data for other purposes?

Let us assume that there existed a technology that allowed you to create an effective intelligent assistant, but that did not require that you give up your personal data. Would Google still collect your personal data?

The answer to this question is quite obviously YES. Google ultimately needs your private information for ad targeting purposes.

Could Google be using the big data/AI argument to justify the collection of huge amounts of private data for ad targeting purposes? I think, very possibly YES.

What Was Mobile?: A Broader Look At Tech

Benedict Evans recently wrote an enlightening post “The end of a mobile wave” where discusses what may come after smartphones.

I try to take a different view. I try to focus not on the devices or platforms that have come and gone, but on the underlying needs that have been satisfied. Hence instead of looking at voice, SMS and smartphones, I try to look at the need for communications (including the synchronous and asynchronous modes) and how they have been satisfied. Hopefully this will give us a broader view, and will also help us assess what the AI breakthrough may mean for us.

The needs that tech has satisfied

In my view, tech has been applied to three basic needs.

  1. The need to be entertained: This has come in the form of games, video, music, e-books, etc. Indeed, looking at the the disproportionate value that this category earns from the iTunes Store and the App Store, this is a huge need that tech has helped satisfy. In video, music and e-books, tech has almost already fully satisfied all needs. It is very hard to think of what tech could do more, other than reducing price (maybe indirectly through streaming services). Games however are a different story. We can see VR contributing hugely to the gaming experience, and we can expect further meaningful innovation in this area.
  2. The need for faster and more complex calculations: Originally computers were conceived for doing things like decoding encryption, calculating the trajectory of missiles and simulating atomic bombs. They were valued for the computing power. Today, we see computers controlling robots in factories, controlling huge industrial plants, navigating spacecraft, navigating self-driving trains, calculating the best way to travel to a certain destination (either by car or by using multiple public transport services), processing images for higher visibility, optimising logistic operations, designing new pharmaceutical drug candidates, predicting the best timing to sell or buy financial assets (for better or worse), and even playing Chess or Go. The current deep learning algorithms that have greatly improved machine learning techniques will most likely contribute to this area, on top of other automation/AI techniques that have been worked on for decades; deep learning will be a sustaining innovation that might or might not greatly contribute, depending on how well they perform at the task on hand relative to other techniques. Most of this innovation has happened in a way that has been mostly invisible to consumers. However, a lot of this has transformed how business is done and the efficiency that is attainable. I do not see any saturation in the needs for this market, and I expect technical advances to continue, with or without deep learning. Although on a much simpler but nonetheless much more broader scale, the digital spreadsheet pioneered by VisiCalc and improved on with Multiplan, Lotus 1-2-3 and MS-Excel have also contributed greatly to the need for complex calculations.
  3. The need for communication: Other than entertainment, the largest direct impact of tech on the lives of consumers has been in communications. In the early days of tech, word processors allowed us to write paper documents more efficiently (with easy editing). DTP software allowed us to even create publishing content quickly and cost effectively. Then with the advent of email and the Internet, communication and publishing suddenly became much, much simpler, cheaper and effective. Mobile build upon this trend, allowing people to be contacted wherever they were, first using voice or text, and eventually (with smartphones), using full email or other apps. With easy and cheap video calling now available, one would think that the need for communication has almost been completely satisfied and that we can innovate no further. However, anyone in the real world can attest that these tools are still no substitute for face-to-face meetings. Even with face-to-face meetings, intentions may not be clearly conveyed. The tools that we use, like PowerPoint, are woefully underpowered and inefficient. Therefore, I think that this need to has yet to be sufficiently satisfied. We are still waiting for the ultimate tool that will allow us to remotely communicate as if we were meeting face-to-face. We are even further away from telepathy-like tools that might free us from the limitations of human language, and to communicate as if our brains were directly wired together.

Hence my opinion is that there are still many needs that await a solution, and are upon the trajectory that tech has pushed us thus far.

Future tech and how mobile fits in

Mobile is ultimately about how we carry tech with us all the time. It is how we are entertained on the train. It is how we can access in real-time and on the go, the results of complex calculations. It is about how human beings can communicate better wherever they may be.

As I see it, none of these needs have yet been sufficiently satisfied. We need to do better. Therefore, there is a lot of room for improvement in the devices that we carry around. I cannot pinpoint exactly what these improvements should be, since they are also governed by the cutting-edge technology that is available. One thing is sure; the people and companies who can see beyond the current devices (the ones that have a track record of doing this) are the ones who will likely find what is still left to do.

(And no, I don’t mean the companies that simply say that AI will come next. Technology should never come first.)

Social Network Dynamics

Given Facebook’s very strong earnings report, it is very easy to forget the inherent fragility of a business predicated on social contributions.

In the case of Apple, they create a superb device and sell it. Customers are primarily attracted by the device itself.

In the case of Google, they created a superb Search service and provided it for free. Users were primarily attracted by the speed and accuracy of the results. The attractiveness of the service itself increased the number of users.

In the case of Facebook and other social services however, the situation is not as simple. Facebook itself has nothing to provide its users. Instead its users are what attract new users. Increasing the number of users on Facebook and the content that they share, is the only appeal that Facebook has. If they can increase users, then the attractiveness of Facebook increases exponentially. However, the same mechanism can move in the wrong direction. If users start to feel negatively towards Facebook for any reason and users start to decrease, there is no inherent attractiveness inside the social service that will dampen the negative spiral.

This is the fundamental structural dynamic of a social network. This is the reason why social networks can rapidly arise out of nowhere and quickly dominate local societies. This is also the reason why they could very rapidly disappear if they fall into a negative spiral.

As the social networks find themselves under stronger pressure to monetise their user base, I expect a significant number of them to take a step too far. They will cross a line, causing negative feelings to build up among their users (or in the case of privacy awareness, the line might come to them). This will start the negative spiral that, without any inherent value in the service itself, will be uncontrollable.

Facebook is an amazing success story. However, I worry that they are still but a single misstep away from irrelevance.

How Large Can Apple’s Services Grow?

In a recent post, I discussed that Apple has to grow outside of tech to continue growing. I also mentioned that the reason why Google and Amazon continue to grow is because, although they are tech companies, what they are selling is actually non-tech products to non-tech audiences (they are selling stuff like advertising slots, books and diapers).

So even as we see Apple’s services growing at 20%, and that it makes more money from services than from Macs, I think the more important trend to look for is how much they are positioned to earn from non-tech products.

To clarify,

  1. Sales from the App Store are nice, but we have to be aware that the vast majority is from games, and most money comes from a small number of “whales” (online game junkies). It is overly optimistic to expect this segment to continue 20% growth in the mid-term. More likely, we will see a flattening of growth from games and maybe a slight increase do to healthy growth of the non-game segment (which will however not contribute too much to the total).
  2. Music is unlikely to grow rapidly.
  3. Other cloud business (probably mostly additional iCloud storage) may grow rapidly for a short time, but few people really need Terabytes of storage, and prices are likely to drop heavily with competition.
  4. Apple Pay is more interesting because people might use it to pay for all kinds of stuff, including non-tech stuff. It is easy to envision Apple Pay being used to purchase advertising slots, books and diapers for example. We know that VISA has revenues of almost 14 billion USD (and obviously, from its business model, a lot of that is profit).

In summary, to understand the growth potential of Apple’s services, I think it is important to look at the non-tech markets and to see how Apple could add a thin layer of their services on these. Apple Pay is a typical case, but I would not be surprised if they decided to play a more direct role in e-commerce, for example. In the long term, I expect that these will be the main contributors to Apple’s service revenue, not the App nor Music stores.

Update

Matt Richman has done a similar but much better analysis of the non-tech service opportunities for Apple.

Is India Really The Next Big Opportunity In Tech

A lot has been made about how important India is to tech, and what a big opportunity the 1.2 billion population is.

While that maybe true, I think it is also important to contemplate the possibility that this may not actually be the case; that despite its huge population, India may not yet be an attractive investment.

Rakuten Ventures had this to say at Tech in Asia Singapore 2016.

While India has a population of 1.2 billion, there are only about 40 million to 50 million people who actually have “real” smartphones – and not those weird Android permutations – and who are at least in the middle class, earning about US$10,000 a year.

If you’re looking at ecommerce alone, you’re talking about a demographic that has been shrunk from 1.2 billion to 40 million or 50 million. That’s basically the addressable market […] For us, when we look at a market, we ask ourselves: ‘Can we get in at the price point we want? Can we actually see a lot of these platforms accrue the value that they want?’ We don’t see that yet.

Objectively, the International Monetary Fund puts India’s GDP per capita for 2015 at 6,162 international dollars, which is less than half of China’s at 14,107. While obviously growing quite quickly, it isn’t necessarily growing that much faster compared to other countries with similar absolute levels. Although macro data obviously does not tell the full story, it does support Rakuten Venture’s view to a certain extent.

If we do accept Rakuten Venture’s view that ‘while India has a population of 1.2 billion, there are only about 40 million to 50 million people who actually have “real” smartphones’, then it does seem like other markets which aren’t receiving as much hype, might actually hold larger potential.

I think this is something worth thinking about. It might be more important to look at metrics of usage like Web usage or Twitter usage to understand how many people do have “real smartphones”, or use the ones they have as such.

iPhone SE Early Statistics

We now have some early statistics on iPhone SE sales in Japan from BCN Ranking. Note that BCN Ranking only provides data from their partners, which include Amazon and major retail outlets, but does not include the Apple Store for example. Also note that the current data is for the March 28th to April 3rd time period whereas the iPhone SE was only released on March 31st.

For clarity, I am only listing iPhones, and I am listing by carrier.

BCN ranking iPhone SE

The interesting observation is that unlike the iPhone 6s where the 64GB model sells better than the 16GB model on all carriers, the reverse is true for the iPhone SE; on all carriers, the 16GB iPhone SE model sells better than the 64GB model. This suggests that iPhone SE users intend to use their phones more casually, and are more driven by price. Importantly, we have to understand that the data is only for the opening weekend which is typically skewed towards early adopters, who we would expect to prefer higher capacity models. It seems that the trend for iPhone SE users to be casual owners might be very strong.

Of course, we do not know the product mix of the items in stock, so this might simply be a result of inventory skew. However, assuming that this trend holds true, then we can make the following tentative conclusions;

  1. The iPhone SE appeals more to users who are more considerate of price, and who do not intend to use their smartphones very heavily.
  2. These users would typically only replace their current smartphones after they have completed their 2-year contract. A strong opening day turnout of this segment suggests that these users were holding onto old phones (either old iPhones or Androids).

This is an interesting dynamic.

As we get more data, we should be able to make an assessment of the popularity of the iPhone SE relative to other iPhone models and to Android phones. Given that the majority of smartphone users are not techies nor social media junkies but plain ordinary citizens, I tentatively expect quite strong performance.

Update

The data for the first full week of sales in Japan (Apr-4 to Apr10) are now available on BCN Ranking, and I have used the new data to plot a chart.

IPhone SE BCN ranking numbers

We see the same trend as the opening weekend that I previously discussed in the above post. However, with the improved visualisation, we can see some additional points.

  1. The 16G iPhone 6s actually sells quite well on all carriers. Techies have ridiculed the 16G model as not having nearly enough capacity. While that may be true in use, many of the people who purchase even the flagship model do not seem to care. However, users of the iPhone 6s Plus model do seem less eager to purchase the 16G model.
  2. The iPhone SE clearly skews heavily towards the 16G model, and as I have said in the above article, this suggests that current iPhone SE buyers are more price conscious, and do not seem to be heavy users of smartphones. The new chart shows that this trend mirrors that of the iPhone 6. Hence it looks like the segment that purchased the one-year-old iPhone 6, is similar to the segment that has purchased the iPhone SE so far.

Considering that the iPhone SE (16G: ¥52,800) is significantly cheaper that the one-year-old iPhone 6 (16G: ¥74,800) and that both are probably attracting the same price conscious buyers, we can expect iPhone 6 sales to rapidly decline and be picked up the the iPhone SE. Of course we can also expect an acceleration of Android users switching to iOS.

How Large Can Apple Grow

It has long been said that Apple earns more than 90% of all profits in the smartphone hardware business. Apple has also seen the first sales decline for more than a decade. It doesn’t take a marketing genius to see that it will be difficult from now on for Apple to grow this business in the future.

On the other hand, Google and Amazon are continuing to grow their businesses at a healthy rate. What is the difference here?

One perspective is to look at which buckets of spending each companies revenue is coming from. Take a look at the following fantastic chart that I took from The Economist; “How countries spend their money”

NewImage

Although I do have some issue with the figures in this chart (the spending on communications seems much too small, for example), it does illustrate the point that the whole economy is much more than tech. In fact, tech spending by the average consumer is probably only a bit larger than their cell phone bill.

Apple’s business is confined to tech. They only capture the expenditure that a person is willing to spend on communication and recreation. On the other hand, Google carries ads for everything from housing, transport, food transport, to education. Similarly, Amazon can capture a margin for every product sold through retail stores. Apple’s business in only tech, whereas Google and Amazon earn money from the mundane non-tech daily activities and necessities that have been part of the economy for hundreds of years. This is why Apple’s business currently has a hard limit whereas Google and Amazon are in markets that can enjoy growth for much longer. Consider that Google still have a very small portion of total advertising expenditure, and likewise Amazon has only a very small percentage of total retail.

Therefore, unlike Google and Amazon, Apple has to find new markets to enter if they want to continue to grow rapidly. Strengthening their position in tech profits doesn’t help them much if human beings only tend to spend so much on communications and recreation. They must enter markets like housing, transport, education and health. On the other hand, Google and Amazon do not. They just have to worry about being disrupted.

Another thing to note is that Amazon has much more business potential in physical goods than it has in digital. Digital goods like those that Amazon sell only serve the need for recreation and education. On the other hand, their physical goods serve recreation, health, clothing, furnishing and alcohol. These are collectively much larger buckets than the digital goods. It makes total sense that Amazon is not really interested in making money from digital goods, but is instead using them to attract customers for the physical ones.

Of course for Apple, entering new markets is something that it has done quite well in recent years. Recent activities and rumours suggest that it is going to enter transport and health. Its activities in education also should not be ignored. Personally, I would like to see enter housing since the housing market is often the centre of economic turmoil and Apple might do something good about that.

Waves in tech and how Apple and other tech companies grow

When looking at the rhetoric around whether or not Apple has will or will not continue to grow rapidly, I often sense that people are not looking back at the history of tech and trying to understand how the tech giants grew in the first place. I’ll try to go into this a bit here, and from this, I’ll try to understand Apple’s chances of future growth and escape from maturity.

Waves

Tech did not grow by companies single-handedly creating new markets out of thin air. Instead, tech grew on top of waves. The successful companies are those that rode these waves. The unsuccessful ones were the ones that missed them, or fell off half way. There have been many waves in tech.

Digital productivity wave

This is the era when word processors and spreadsheets became popular (1980s to early 1990s). This created the first growth wave of PCs. Microsoft was the company that benefited the most from this wave. Both IBM and Apple initially rode this wave quite well, but they fell off half way.

Essentially, this was the digital productivity age. Word processors relieved us of the need to start out with a new sheet of paper every time we mis-typed a word (it allowed us to edit). Spreadsheets saved us from hours typing digits into calculators.

One thing to note is that the GUI revolution did not create a new wave, but instead empowered the ongoing digital productivity wave. The core job of tech remained more or less the same.

Internet wave

This was when the Internet took off and GUI-capable PCs made it accessible to mere mortals (mid 1990s to mid 2000s). Microsoft again rode this wave with Windows 95. The rise of the Internet also provided the wave which Amazon, Google, Facebook and others rode to become giant companies.

The Internet provided us with instant communication and information. It connected friends and co-workers via email. It connected shops and customers via the WWW. It allowed us to share photos via Facebook. It allowed us to find documents in the form of web-pages through search. This is significantly different from the previous digital productivity wave, which can easily be understood if you consider how the Internet wave changed how we presented our work. In the digital productivity wave, we still printed our work out onto paper. In the Internet wave, our work was shared digitally and instantaneously.

The Internet wave is still with us

The Internet wave has actually been very long. Starting in the mid 1990s, it is still going strong in 2016. The Internet companies are still growing, not necessarily because they are amazingly well run, but simply because the pie is growing. E-commerce is still a small portion of total commerce in the US and growing. Amazon is still riding this wave. Similarly, Internet ad spend is still a small fraction of total ad spend and this is what allows Google to continue to grow. The Internet is still growing, and in fact, this has been fuelled by none other than the iPhone which put the Internet in our pockets.

Apple’s maturity

Apple’s growth has slowed because although it dramatically expanded the time we spend on the Internet, it’s business model does not benefit proportionally with Internet usage. A single iPhone today is used much more on the Internet than it used to be in 2007. It is used for much more tasks, consumes much more data, and much more time is spent staring at their screens. However, Apple still charges basically the same amount of money per device. Apple does not earn significantly more money from the extended usage.

This is in contrast to Google and Amazon, both of which benefit proportionally from extended Internet usage. This is why Google still consistently grows at double digits whereas Apple’s growth comes and goes.

Finding the next wave

Although Apple could grow by finding a business model that grows in proportion to Internet usage (charging for content, services and payments), another way for Apple to escape maturity is to ride the next wave after the Internet.

Fundamentally, the Internet is about information and communication. Although these are very important facets of human existence, they are not the most important. Apple first entered the scene with digital productivity, and then rode re-ignited the Internet and communication wave with the iPhone. Similarly, Apple could provide tools to set fire the next wave.

One of these waves could be health. People living in developing countries spend their money on a plethora of things or which health is a huge portion. In fact, the money that we spend on health is much larger than what we spend on communication and entertainment (the current revenue centres of tech).

If Apple could find a way to benefit our health, keep us healthy, reduce our dependence on medication, improve the effectiveness of physicians, make health insurance more efficient, Apple would be opening the door to a huge market.

Thinking about Uber

The interesting thing about Uber and other services like AirBnb is that they are not just information services; they are the whole stack. Uber does not just notify taxi drivers where their customers are or assist payments; they provide the cars and the drivers.

In this sense, they operate outside of the Internet wave. They are entering the real world, and this is very different from what Microsoft, Google and Facebook have done before them.

This provides us with a hint at what the next wave could be.

What’s next for Apple

For Apple to find significant growth, they must find the next wave outside of the Internet. There is only so much left to do in communications if they continue with their business model of creating great products. Even VR has only limited potential if it is to stay within the boundaries of entertainment and communications.

If you look at where a individual in a developed country spends their money throughout their lifetime, housing, health, transportation, education are much larger than entertainment and communications. If Apple can successfully contribute to any of these markets, the current discussion of Apple maturing will soon seem utterly ridiculous.