"So what're you planning to do for the rest of the week?" It was Wednesday, and she'd counted on getting this part of the story by Saturday, but here she was going to have to wait, clearly, until this Tjan arrived. "Same stuff as we always do. We build crazy stuff out of junk, sell it to collectors, and have fun. We could go to the Thunderbird Drive In tonight if you want, it's a real classic, flea-market by day and drive in by night, practically the last one standing." Perry cut in. "Or we could go to South Beach and get a good meal, if that's more your speed." "Naw," Suzanne said. "Drive in sounds great, especially if it's such a dying breed. Better get a visit in while there's still time." They tried to treat her but she wouldn't let them. She never let anyone buy her so much as a cup of coffee. It was an old journalism-school drill, and she was practically the only scribbler she knew who hewed to it: some of the whores on the Silicon Valley papers took in free computers, trips, even spa days! -- but she had never wavered. # The afternoon passed quickly and enchantingly. Perry was working on a knee-high, articulated Frankenstein monster built out of hand-painted seashells from a beach-side kitsch market. They said GOD BLESS AMERICA and SOUVENIR OF FLORIDA and CONCH REPUBLIC and each had to be fitted out for a motor custom built to conform to its contours. "When it's done, it will make toast." "Make toast?" "Yeah, separate a single slice off a loaf, load it into a top-loading slice-toaster, depress the lever, time the toast-cycle, retrieve the toast and butter it. I got the idea from old-time backup-tape loaders. This plus a toaster will function as a loosely coupled single system." "OK, that's really cool, but I have to ask the boring question, Perry. Why? Why build a toast-robot?" Perry stopped working and dusted his hands off. He was really built, and his shaggy hair made him look younger than his crows-feet suggested. He turned a seashell with a half-built motor in it over and spun it like a top on the hand-painted WEATHER IS HERE/WISH YOU WERE BEAUTIFUL legend. "Well, that's the question, isn't it? The simple answer: people buy them. Collectors. So it's a good hobby business, but that's not really it. "It's like this: engineering is all about constraint. Given a span of foo feet and materials of tensile strength of bar, build a bridge that doesn't go all fubared. Write a fun video-game for an eight-bit console that'll fit in 32K. Build the fastest airplane, or the one with the largest carrying capacity... But these days, there's not much traditional constraint. I've got the engineer's most dangerous luxury: plenty. All the computational cycles I'll ever need. Easy and rapid prototyping. Precision tools.