Over the past year, I’ve written a few articles for Mutual Mobile that I’ve never gotten around to posting here. They’re all more or less technical, so may not be interesting if you visit for personal and family stories. If you’d like to see any of these, they’re linked here.
I’ve just had the first article in a series published over at the Mutual Mobile Engineering Blog. It’s all about making Unit Testing more efficient and less repetitious. The article is written with a focus on iOS, but the principles can be applied more broadly as well.
I did a presentation at CocoaConf Dallas today on how, as a developer, to make your iOS apps usable by people with visual impairments. It was a lot of fun, and seemed to be well-received by the conference attendees. If you’d like to see the slides, you can download them here:
In addition, I announced an open source component I wrote to make accessibility testing easier for developers. It’s called SMAccessibilityOverlay. By adding it to an app under development, you can temporarily display an overlay that quickly shows what areas of the screen have been marked as accessible, and what labels are associated with those regions:
If you’d like to try it out in your app, you can download it from GitHub here. I’d also be delighted to have input on it, either in the form of suggestions (good) or code contributions (better) or encouraging beer purchases (best).
I was a fairly early backer of the much-publicized Pebble smart watch. After being wristwatch-free for years, I’ve been wearing mine for nearly a week now, and have some early first impressions I thought I’d share for the curious.
First off: it’s a good-looking timepiece. While the 144×168 screen resolution sounds almost absurdly low for those of us who have been spoiled by full-color retina displays, it look just fine in context. The high-contrast display technology is great, and is visible in a wide range of conditions. Being able to turn on the backlight with a quick wrist-flick is terrific, though it does make playing hide-and-seek in the dark more challenging (as my kids will attest).
The on-device software is solid and well thought-out, with a clear, usable interface a bit reminiscent of the original iPod. Scroll views show a shadow at the top or bottom if there’s more content to display. Controlling music works like a charm with the built-in music app or any others that use Apple’s media control APIs. (Combined with Pandora and Apple TV, I can control music streaming from the Internet through my home sound system from my wrist. It’s the future!)
The included watch faces are fairly varied and interesting, with the binary display being a favorite of mine, though it takes me 10 seconds to figure out the time when someone asks me. And thanks to the support for notifications, I’ve known what those incessant chirrups coming from my phone are about without having to fish it out of my pocket.
Funnily enough, my biggest beefs with the out-of-the-box experience have to do with iOS. Pebble is taking advantage of some newer features in iOS 6 that haven’t been widely used yet, and there are still some rough edges on Apple’s side of things. Notifications have to be reset whenever the Pebble and phone lose contact with each other (which includes restarting either device, using Airplane mode, rebooting your phone for a system update, etc). Additionally, when the watch talks to the phone and the Pebble app isn’t already running in the background, iOS throws up an obtrusive alert telling you that the watch is trying to talk to the phone. It then launches the Pebble app into the foreground if you give it the permission to communicate it’s asking for.
There are, however, a few knocks I can level at the Pebble itself. If one gets multiple notifications in rapid succession — for example, when the mail app finds a few new messages in your inbox — the first notification immediately gives way to the latter, with no way to rewind and see the initial information.
The battery life doesn’t seem near as long as the advertised week. I admittedly haven’t run it into the ground yet, and I’m not 100% sure I gave it a full charge, since there’s no indication of charge status when it’s plugged in*, but so far it seems to last closer to 4 days than the week the company cites. (Oops — it just expired. Looks like the 4 day figure’s about right, and the low battery warning seems to appear 12-18 hours before it gives up the ghost.)
The most egregious problem, however, is the SDK. Or more precisely, the gaping hole where it should be. As detailed on http://www.ispebblesdkshipping.com/ (a spoof of Pebble’s own http://www.ispebbleshipping.com/), the kit that would allow developers to create new apps and watch faces for the Pebble was promised first for August 2012, then by January 23, then when the watch shipped. As of today, it still hasn’t turned up, and the company has been tight-lipped about what is causing the delay.
Given that the hardware specs have actually been improved since the Kickstarter finished, my hope is that the programmers are simply hoping to deliver something higher-quality and more capable than they’d initially planned on. The lack of communication, however, is a bit worrisome since many folks who have bought one of the devices did so out of a desire to be able to develop for it.
But overall, I’m happy with this first version of the Pebble. The existing functionality seems solid, and the possibilities for future improvements will be exciting once the SDK is finally out. If the company has to choose between putting something out soon that’s half-baked, or taking longer to create something they’re really proud of, it’s clear they choose the latter — a decision I applaud.
But now I have to go charge my watch.
* UPDATE: There actually is an indicator that lets you know when the watch is fully charged, but until the Pebble folks graciously pointed out the help page, I hadn’t been able to sort out the iconography they are using.
One of the best explanations I’ve ever seen of the appeal of what I currently get to do as a profession.
Why is programming fun? What delights may its practitioner expect as his reward?
First is the sheer joy of making things. As the child delights in his mud pie, so the adult enjoys building things, especially things of his own design. I think this delight must be an image of God’s delight in making things, a delight shown in the distinctness and newness of each leaf and each snowflake.
Second is the pleasure of making things that are useful to other people. Deep within, we want others to use our work and to find it helpful. In this respect the programming system is not essentially different from the child’s first clay pencil holder “for Daddy’s office.”
Third is the fascination of fashioning complex puzzle-like objects of interlocking moving parts and watching them work in subtle cycles, playing out the consequences of principles built in from the beginning. The programmed computer has all the fascination of the pinball machine or the jukebox mechanism, carried to the ultimate.
Fourth is the joy of always learning, which springs from the nonrepeating nature of the task. In one way or another the problem is ever new, and its solver learns something: sometimes practical, sometimes theoretical, and sometimes both.
Finally, there is the delight of working in such a tractable medium. The programmer, like the poet, works only slightly removed from pure thought-stuff. He builds his castles in the air, from air, creating by exertion of the imagination. Few media of creation are so flexible, so easy to polish and rework, so readily capable of realizing grand conceptual structures. (As we shall see later, this very tractability has its own problems.)
Yet the program construct, unlike the poet’s words, is real in the sense that it moves and works, producing visible outputs separate from the construct itself. It prints results, draws pictures, produces sounds, moves arms. The magic of myth and legend has come true in our time. One types the correct incantation on a keyboard, and a display screen comes to life, showing things that never were nor could be.
Programming then is fun because it gratifies creative longings built deep within us and delights sensibilities we have in common with all men.
From The Mythical Man-Month, by Frederick P. Brooks, via Federico Grilli
…we didn’t have fancy 3D graphics! We had half-acre pixels and 8 colors and we liked it!
Today while visiting garage sales with my lovely bride, I stumbled across an October 1982 National Geographic with these ads for game consoles of the day. I was 12 when these ads were run, and remember fondly many hours whiled away with friends playing both Atari and Intellivision. (I never did much with the Odyssey², probably because I saw these ads and the “wizard” gave me nightmares.)
On January 2, I”ll be going to work for Mutual Mobile, an Austin-based company that specializes in application development for iOS, Android and Blackberry devices.
“But Sean!” I hear you, Rhetorically Convenient Reader, cry. “You just started working for Magnolia back in March! Why are you moving on again so soon?” That’s a good question. It doesn’t have anything to do with Magnolia: it’s a terrific company, filled with great people that I am glad to call coworkers and friends. That fact made this decision especially hard, as I knew I’d be seeing less of these people I quite like (and would, honestly, be making their lives tougher in the short term with my departure).
But as much as I like Magnolia, the nature of their business means that my work there revolved around two things: Java and Sales. Java is an industry standard for creating software of various stripes, but it’s a very buttoned-down, staid environment to work in. It lacks the creative energy and — is it silly to say this? — joy that I see in the communities that exist around some of the more dynamic, less-widely used languages like Ruby and Python and Lisp (for you AI wonks out there). I can get work done in it just fine, but the number of times a spontaneous “Awesome!” escapes my lips while doing so is vanishingly small.
The other focus of my last 9 months has been selling Magnolia to various companies. I think the software is a phenomenal piece of work, and really well-suited to a whole variety of Web Content Management scenarios. But while I can do an effective job helping to demonstrate and sell it, there’s no frisson associated with doing so for me.
I like technology for what it can do for people. I like creating it because doing so is much like fashioning a beautiful, intricate bit of clockwork, or a complex bit of musical counterpoint. There is immense satisfaction in creating something that works elegantly and beautifully. Unfortunately, telling people about how terrific other people’s work is provides very little of the satisfaction that actually doing that creative work oneself. If I’m going to be in the technology world, I want to make cool stuff for normal people, not to sell cool technology to corporations.
So, Mutual Mobile. I’ll be starting there as an iOS Manager, which means that not only will I be getting to work directly on creating some great stuff for their impressive list of clients, but I’ll also be getting to help figure out the best way to help the other developers there do their best work as well. I’ll be hanging around a bunch of really smart folks, and will doubtless be learning tons about iPhone development and other mobile disciplines. The company seems like a marvelous place to hang one’s professional hat — a vibrant company culture, entirely self-funded with no investor money involved, just named by Forbes as one of America’s most promising companies, and has its company meetings at the Alamo Drafthouse, one of my favorite places in Austin. And the downside of facing a commute again is largely ameliorated by the fact that Texas State University runs a shuttle bus from San Marcos with wireless Internet to a park 4 blocks away from the office. Sweet!
I’m excited about this next adventure, and will be posting more about it once I’ve got my feet under me. Wish me luck!
Yesterday the kids were off from school for teacher conferences. We started off with 10 young people under the roof, thanks to sleepovers, with the remainder of the day continuing in the same busy, wild vein.
And then, on the way to pick up a collection of teenagers from the river, I heard on NPR that Steve Jobs had died.
I had never met the man, and was surprised to realize how sad the news of his death made me. As I’ve mulled over various tributes and retrospectives, I’ve come to a better understanding of why that is.
The products and technology he brought about have, of course, been a large part of my personal and professional life. His commitment to excellence has been inspirational, and his drive to achieve great things stirring. His charisma and capability as a leader were instructive.
But the most interesting, distinctive thing about his career and success is this: its humanism. While the rest of the industry has often been content to make computers do what computers do better, Mr. Jobs had an unwavering focus on using technology to help people do people things.
What do people do? We communicate. The iPhone, Facetime, and iChat spring from this desire. We make and enjoy art. iMovie, Garage Band, iPhoto, and the iPod all have their roots there. We enjoy relationships with other people. Thus, integration with all sorts of social media, facial recognition technologies, etc. We tell stories. Pixar does some of the most brilliant storytelling of our generation. (“Up” made me misty-eyed in record time, and “The Incredibles” remains one of my favorite films ever.)
For many technologists, the instinctive thing to do is to span the gap between people and technology by having the explorers build a precarious rope bridge which will allow the tenacious to, with a good deal of effort, make it to the other side. Steve’s unique genius was that, having made it across, he then turned his fellow explorers right back around and had them build a sturdy, capacious, beautiful bridge for the rest of the world to follow the explorers.
Indeed, he made technology “for the rest of us” — not so that we could have better gadgets, but so that we could ultimately have better, richer, more fully human lives. Thanks, Steve.
This October, anyone can take an Introduction to Artificial Intelligence class, taught by professors at Stanford, for free.
This is great. But it gets better. In order to expand the scope of the class from the 200 people they’ve been teaching in person, the instructors will be using AI software to grade homework, aggregate discussion questions, and generally mediate interactions with students. Why bother? Because, to date, over 100,000 people have signed up for this course, and the enrollment is showing no signs of slowing.
The use of the software to scale allows students to get feedback on their individual homework assignments and quizzes, to interact with the instructors, and to get a ranking in the course compared to both other online attendees and the students enrolled at Stanford — feedback that would be utterly impossible to provide to that number of people if the instructors didn’t have the help of AI. It will be fascinating to see how the concepts taught in the class are used to administer it.
I’ve been intrigued by AI ever since reading Gödel, Escher, Bach way back when I was a teenager (and before I was really equipped to follow all of it). More recently, I’ve been increasingly interested in robotics and the applications thereof, which rely pretty heavily on some of the AI concepts that are in the syllabus for this class. And, of course, I have an enduring interest in games, which are probably where AI is used most often in modern computing.
So am I signing up? You betcha. And I hope some of my nerd friends will too, so that we can compare notes along the way.
This is one of the reasons I love living in the future: we have access to information and learning that is unparalleled in human history, opportunities to sit at the feet of experts that we could only have dreamed of even a decade or two ago. And wonderfully, access to an amazing education is increasingly being divorced from access to money, creating remarkable opportunities for people who are ready to work at their own learning, regardless of their backgrounds. I fully expect to be bested in the course rankings by smart 14 year olds in India and China, and will be excited to see it happen.
I’ll post some updates and reflections along the way, and possibly homework assignments too if they turn out to be interesting. This should be a fun ride.
(Thanks to Singularity Hub for the tip-off.)