Thoreaus Theories Of Adaptation: 1) After months of training and you finally understand all of a programs commands, a revised version of the program arrives with an all-new command structure. 2) After designing a useful routine that gets around a familiar bug in the system, the system is revised, the bug taken away, and youre left with a useless routine. 3) Efforts in improving a programs user friendliness invariable lead to work in improving users computer literacy. 4) Thats not a bug, thats a feature!