TweetFollow Us on Twitter

September 95 - The Veteran Neophyte: A Feel for the Thing

The Veteran Neophyte: A Feel for the Thing

Dave Johnson

I used to think there was no room for mystery in the world of computers. I didn't think there was any use for fudge factors or rules of thumb or hunches in the clean, exact, hermetically sealed bubble of logic we all spend so much time diddling and poking. That stuff belongs to "real world" engineering, not software engineering, right? Software is always bounded and orderly, always understood completely from top to bottom, with no dangling ends, no frayed edges, and no baling wire and duct tape holding things together. There's never a need for vague, hand-waving explanations of how it all works, because we know how it works.

That's what I used to think. I'm not so sure anymore.

Ultimately, of course, the operation of computers is deterministic and absolutely predictable. There's guaranteed to be a complete explanation for any event on the computer; the search for an answer will always find one. It's like playing Go Fish with a deck of cards that contains only threes -- "Got any threes?" "Yep." "Got any threes?" "Yep." "Got any threes?" "Yep." The answer itself, of course, may be convoluted and difficult, and is often way too much trouble to actually track down ("Have you tried rebooting?"), but it's always there. The world inside computers has a definite, impermeable bottom, like a swimming pool.

The real world, on the other hand, is more like being out in the middle of the ocean: the bottom is nowhere in sight, and in fact is so far away that it may as well not exist at all. Trying to completely explain things in the real world is generally an exercise in futility, though one that humans seem to have a capacious appetite for (that's what science is all about, after all). The real world is so vast and complex that our explanations are never really complete. The answers always lead to more questions, and the edges of our knowledge remain frayed and ragged and crumbling, even though the center may have a seemingly solid, well supported integrity.

The thing that got me thinking about all this is boomerangs. I've been learning to throw boomerangs lately, and it's extremely satisfying -- and somehow endlessly novel -- to throw something away from yourself as hard as you can, and have it return several seconds later, hovering gently down into your waiting hands like a bird coming home to roost. (Such a perfect flight, of course, is a rare thing for a novice like me. More often, if the boomerang comes anywhere near me, it's slicing past at a frightening rate of speed while I cringe, covering my head.) While I've been learning to throw boomerangs, I've also been trying to watch myself learn to throw boomerangs -- sort of meta-boomeranging -- and I noticed that a complete explanation of what was happening was not only absent, but completely unnecessary: I don't need to know how boomerangs work to learn to throw them well.

Boomerang throwing is one of those real-world activities -- there are many of them -- that are governed by rules of thumb, by approximation and estimation, and by "feel." There are lots of variables involved in producing a good boomerang flight, and they're all sort of woven together, interconnected and interdependent. The direction of the throw, the angle of the boomerang as it leaves your hand, the forward power of the throw, and the amount of spin all contribute to the flight characteristics, but the way they combine and interact is complex and nonobvious. How's a poor, bewildered boomerang neophyte to make any sense of it all?

Well, the only way to learn to throw boomerangs is to get yourself a decent boomerang (very important!), read a little about it or get a lesson from someone, and then just get out there and start throwing. You need to experience it; you need to feel the smooth, flat weight of the thing, notice the way it slices the wind as it leaves your hand, and watch as it spins and swoops. Every throw you make adds to a growing store of knowledge about boomerang behavior. Slowly, you begin to sense the structure of the rules that govern the flight of the boomerang, to get a feel for it, to gain some control. But no matter how long you work at it, there's always more you can learn about boomerangs. Boomerang throwing, like most things in the real world, has no bottom.

But even though things in the real world are webby, tangled, and complex, with no real bottom and no real center, and even though complete understanding is out of our reach, that doesn't stop us from getting things done. Even though we may not understand exactly what's going on when we throw a boomerang, we can learn to throw them anyway, and can actually learn to throw them with incredible skill. Scientists don't have a complete understanding of fluid mechanics, but we can still design hydraulic lifts that lift, toilets that flush, and airplanes that fly.

Though it seemed profound when I first thought of it that way, it really isn't anything remarkable at all. It's the stuff our everyday sensory world is made of. It's our standard, animal mode of operation. We depend heavily on trial and error, on finding and keeping strategies that work. We invent myths and superstitions to explain things we don't understand, we guess, we fake it, we operate by feel. And it works just fine.

But we don't need that sort of thing in the clean, deterministic world of computers, right? If we know the answer is within our reach, then why gloss over it? There's one very good reason: it's gotten to the point where it's often really hard to reach the answer. Computers have become so complex that finding the real answer is often a Herculean feat requiring great effort and stamina. The things that we're "growing" in the machine are getting very deep and webby and complex, just like things in the real world. That nice smooth bottom we all know and love is getting pretty remote and hard to see, and in fact trying to keep it in sight often holds us back.

The truth is, we need fakery, or myth, or something similar, to avoid being hopelessly mired in complexity, and to let us feel cozy even in the face of something too deep to comfortably understand. The idea that an icon in the Finder, a document window in an application, and a file on the hard disk are all "the same thing" is a fiction, an illusion created from smoke and mirrors, and one that users don't even think about anymore (unless, of course, an application screws up the illusion; see Mark Linton's article in this issue for some code to help you avoid such a faux pas). But it's precisely that kind of myth and abstraction that lets people ignore all the underlying complexity and just go about their everyday business. Without that kind of trickery most people would be lost.

Humans have a deep need for some sort of explanation, and we'll often ignore aspects of a situation, or even make stuff up out of thin air, if it helps us to find an "answer." Remember the frictionless inclined planes and perfect vacuums of college physics? Without that kind of glossing over of details, we'd have been helpless. (A college housemate of mine and I used to joke about running a college physics stockroom: boxes of frictionless, massless pulleys on the shelves; gallon jugs of zero-viscosity liquid at our feet; coils of infinite and semi-infinite wires hanging neatly on the pegboard wall. Those wires have no thickness or mass, thank goodness, or the storage requirements would be prohibitive.) This need for explanation is what has led us to science, and to religion, and to superstition. These are not the same thing, of course, but they can all serve the same purpose: a soothing, protective balm on the raw edges of our incomplete knowledge. They give us a ground to stand on, a rail to hold on to, as we totter along in the darkness, going who knows where, hoping the batteries will hold out long enough to get an answer.

Now that I think about it, I'm happiest with a generous helping of myth and fiction stirred into my computing. It can help make the computer -- which, let's face it, is essentially a gritty, sharp-edged, and hostile machine -- feel more rounded and friendly. It can provide a useful disguise, like a plastic nose and glasses on something seething and alien, making it recognizable, familiar, even comforting and amusing. If it's done well, it can even let me learn to use a computer in much the same way I learn to throw a boomerang: by picking it up and trying it, by mucking around and getting a feel for it, by discovery.

Maybe best of all, it lets computers keep a little of their mystery. The mystery and magic of the Macintosh are why many of us are programmers, after all. Mysterious things, things that don't have clean and obvious boundaries, are inevitably more interesting and more fun. There's no denying that computers have a dull, featureless, dreary bottom. But in the other direction there seems to be no boundary; the top, if there is one, is as far away as the sky. So yes, I think there's plenty of room for mystery in the world of computing. Plenty of room indeed.


    RECOMMENDED READING

    • Many Happy Returns: The Art and Sport of Boomeranging by Benjamin Ruhe (Viking, 1977).

    • How to Hide Almost Anything by David Krotz (William Morrow and Company, 1975).

DAVE JOHNSON has an ever-lengthening list of life goals, things that he'd like to accomplish or experience before leaving this mortal coil. Some recent additions include making marshmallows from scratch, milking a cow, and hugging a full-grown bear. (Is bear breath better than dog breath? There's only one way to find out!) If you have a cow or bear Dave could visit, please let him know.*

Thanks to Lorraine Anderson, Jeff Barbose, Brian Hamlin, Mark "The Red" Harlan, Bo3b Johnson, Lisa Jongewaard, and Ned van Alstyne for their always enlightening review comments.*

Dave welcomes feedback on his musings. He can be reached at JOHNSON.DK on AppleLink, dkj@apple.com on the Internet, or 75300,715 on CompuServe.*

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

How to become the ultimate robot warrior...
Chrono Strike is a delightfully immersive beat ‘em up with a sense of humor (any game with a good Sims reference gets points in my book). [Read more] | Read more »
Tips and tricks to get a higher score in...
Snow Roll is a devilish endless runner very much in the vein of Flappy Bird. It revels in its dastardly level of difficulty, and doesn’t really care how angry you get at it as it knows you’ll keep coming back for more. [Read more] | Read more »
How to win big in Slots Deluxe
Cheating while gambling is illegal and morally wrong, and in some parts of the world it leads to men with names like Vinnie "Six Knuckles" Manchenzo beating you to a pulp in a dark alley. [Read more] | Read more »
How to take over the world in Dictator 2
Running a country isn't easy - especially when you're a dictator who wants to take over the world and crush everyone in your path while you do it. [Read more] | Read more »
Tips and tricks to get a higher score in...
Tank.iois - you guessed it! - another multiplayer arena battler likeAgar.io and Slither.io. It does differentiate itself by putting you in a tiny tank though, so it's not exactly the same. To help you get that all-important high score, we've got a... | Read more »
How to unlock characters in One Tap Tenn...
As the title suggests, One Tap Tennis requires only a single tap to play its particular brand of tennis, and rewards you with a ton of unlockable characters if you perform well. Fortunately for you, we at 148Apps have got a few tips and tricks to... | Read more »
Grab it now: Game Craft’s Legend of War...
The real time strategy game is now available for you to sink your teeth into, through the App Store and Google Play. Combining elements of skill, strategy and empire building, Legend of War is a real gamers’ game. [Read more] | Read more »
Skateboard Party 3 ft. Greg Lutzka (Gam...
Skateboard Party 3 ft. Greg Lutzka 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: Skateboard Party is back! This third edition of the popular sports franchise features professional skater... | Read more »
Cubious (Games)
Cubious 1.0 Device: iOS Universal Category: Games Price: $.99, Version: 1.0 (iTunes) Description: Cubious – How smart are you? How high is your IQube? Solve the impossible puzzles to find out, and help a lost little cube find his... | Read more »
Goat Simulator Waste of Space (Games)
Goat Simulator Waste of Space 1.1 Device: iOS Universal Category: Games Price: $4.99, Version: 1.1 (iTunes) Description: ** IMPORTANT - SUPPORTED DEVICESiPhone 4S, iPad 2, iPod Touch 5 or better.** | Read more »

Price Scanner via MacPrices.net

Enterprise Workers Pick Technology Over Perks...
New Adobe study shows surprising attitudes about office jobs and where the future of work is heading. Adobe has released survey findings revealing that a surprising 70 percent of U.S. office workers... Read more
Memorial Day Weekend Sale: $50-$100 off 11-in...
B&H Photo has 13″ and 11″ MacBook Airs with 256GB SSDs on sale for $50-$100 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 11″ 1.6GHz/256GB MacBook Air: $999 $100 off MSRP... Read more
Memorial Day Weekend Sales: Apple MacBook Pro...
B&H Photo has 13″ and 15″ Retina MacBook Pros on sale for up to $210 off MSRP. Shipping is free, and B&H charges NY tax only: - 15″ 2.2GHz Retina MacBook Pro: $1799 $200 off MSRP - 15″ 2.5GHz... Read more
Memorial Day Weekend Sales: Apple iMacs and M...
Take up to $150 off the price of a new iMac or Mac mini at the following Apple resellers this Memorial Day weekend: iMacs: B&H Photo has 21″ and 27″ iMacs on sale for up to $150 off MSRP... Read more
Apple refurbished Retina MacBook Pros availab...
Apple has Certified Refurbished 2015 13″ and 15″ Retina MacBook Pros available for up to $380 off the cost of new models. An Apple one-year warranty is included with each model, and shipping is free... Read more
Apple refurbished 11-inch MacBook Airs availa...
Apple has Certified Refurbished 11″ MacBook Airs (the latest models), available for up to $170 off the cost of new models. An Apple one-year warranty is included with each MacBook, and shipping is... Read more
Goal Zero and OtterBox Partner to Expand iPh...
Goal Zero, specialists in portable power, have announced a partnership with OtterBox, brand smartphone case protection, to offer the Slide and Slide Plus Batteries as modules compatible with the new... Read more
15-inch Retina MacBook Pros on sale for up to...
B&H Photo has 15″ Retina MacBook Pros on sale for up to $210 off MSRP. Shipping is free, and B&H charges NY tax only: - 15″ 2.2GHz Retina MacBook Pro: $1799 $200 off MSRP - 15″ 2.5GHz Retina... Read more
Clearance 2015 13-inch MacBook Airs available...
B&H Photo has clearance 2015 13″ MacBook Airs available for $250 off original MSRP. Shipping is free, and B&H charges NY sales tax only: - 13″ 1.6GHz/4GB/128GB MacBook Air (MJVE2LL/A): $799... Read more
Apple refurbished Apple TVs available for up...
Apple has Certified Refurbished 32GB and 64GB Apple TVs available for up to $30 off the cost of new models. Apple’s standard one-year warranty is included with each model, and shipping is free: -... Read more

Jobs Board

*Apple* Solutions Consultant - APPLE (United...
Job Summary As an Apple Solutions Consultant, you'll be the link between our future customers and our products. You'll showcase your entrepreneurial spirit as you Read more
*Apple* Project Engineer - Smart Source Inc...
SmartSource is in need of an Apple Project Engineer for a 12 month contract opportunity in Pittsburg, PA. Role: Apple Project Engineer Location: Pittsburg, PA Read more
Automotive Sales Consultant - Apple Ford Linc...
…you. The best candidates are smart, technologically savvy and are customer focused. Apple Ford Lincoln Apple Valley is different, because: $30,000 annual salary Read more
Service Assistant - *Apple* Chevrolet *App...
Apple Automotive is one of the fastest growing dealer...and it shows. Consider making the switch to the Apple Automotive Group today! At Apple Automotive, we Read more
Editor, *Apple* News - APPLE (United States...
Job Summary The Apple News team is looking for a passionate and knowledgeable editor with experience covering entertainment/pop culture and experience running social Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.