570 karma · joined April 8, 2007
jack@realmode.com
As a prime example, remember all the experts who got Iraq wrong? They were wrong about everything: WMD, cost, duration, effects, etc. Fast forward to the brink of the next war—instead of hearing from the people who were right, we're once again bombarded with the opinions of the wrong. Cheney and Rumsfeld were both on tv constantly spouting their expertise on Libya, Syria etc.
This happens in just about every field, time after time. It's no wonder people don't care what the so-called experts think.
Seriously, I'm no bomb expert but wouldn't laptops still be the most fruitful terrorist attack vector? Mine laptop is 6 lbs and has never been given a second glance.
But I don't know what he could be up to. Getting people hooked? Seems like running Mathematica on underpowered hardware could leave a bad taste in people's mouths.
There was a surge of hate for Microsoft back then that was frequently expressed in forums on the fledging web and in the newsgroups. Very often you'd see complaints about Microsoft being a monopoly, followed by (in the same post), a pitch for Linux or Mac or every once in a while some other system. “Linux is better than Windows, and it's free!” This left me scratching my head. So there's a superior, less expensive alternative to Windows—what's your definition of monopoly again? And what of OS/2? Runs Windows apps better than Windows, says IBM, a not so small competitor. (For the youngsters, IBM was a large computing corporation of the time, once the very symbol of market dominance.)
The judgment the DOJ eventually won forced Microsoft to untangle IE from Windows. While there's no doubt IE had a huge advantage by piggybacking on every copy of Windows, I say “so what”. Can anyone imagine Apple being ordered to not ship nor require iTunes on the iPhone?
Gates wanted to kill Netscape Navigator because it made business sense. Probably every company wants to knock off their competitors, whether they come out and admit it or not. Look what Jobs did to Flash. I don't mean to pick on Apple. You should read about some of the dirty tricks pulled by Nintendo, IBM, Dell, etc. More than likely every company of any size has some contemptible actions in their history; these are just ones I happen to know about.
I like Bill Gates. At the same time, I can see how some people wouldn't like him. But let's keep things in perspective. We're lucky to have a hyper-intelligent, eminently competent man at the helm of the world's largest foundation.
It became one of my favorite puzzles, and I tried it on friends and family. I certainly never thought it could have "real-world" applications.
But then it occurred to me, people were solving this puzzle every day.
Think of an ordinary loan. Each month, you make a payment that's part interest and part principal. At first it's mostly interest, then the ratio shifts over time, the final payments being nearly all principal.
You normally start with a loan amount (principal), an interest rate, and a loan duration (typically 180 or 360 months). From these parameters, you figure the monthly payment, a process called amortization. Part of the payment goes towards interest, part towards the principal.
Each month you're required to service the loan, which means to pay (at least) the interest. That's the cost of renting the money. Some loan arrangements allow you to pay down the principal at your own pace. If you only ever pay interest, the principal will remain unchanged, and the loan will go on forever. This is the Netflix model: they don't care how long you keep a disc—you're paying rent on it every month. Many people pay more than the monthly payment from time to time. The principal will be reduced by this extra amount.
The worm has taken out a loan. The twist is, we don't yet know the principal, nor the total amount to be paid, which corresponds to the final rope length. Instead, we know the payment: 1 yard. The interest portion varies, but the worm consistently pays down the principal 1 inch each pay period.
Some of the added yard (monthly payment) appears in front of the worm (interest portion) some behind it (principal portion). Stretching the rope uniformly has the effect of servicing the interest. At first, most of the newly added rope appears in front of the worm, but as with the ordinary loan, the back/front ratio increases over time.
That the worm will eventually reach the end of the rope is now evident. If your interest payment is taken care of, then even a small monthly pay-down of the principal will eventually pay off any size loan.
[1] https://twitter.com/KirstyWark/status/385786002456842240
[2] https://twitter.com/BBCNewsnight/status/385885262565216256
x ← x ⊕ y, y ← y ⊕ (x & m), x ← x ⊕ y
The mask determines the subset of bits that get swapped.