When we understand knowledge-based systems, it will be as before -- except our fingertips will have been singed.
仅仅知道如何使用工具是不够的;还必须了解它们何时适用。
"Innocence always calls mutely for protection when we would be so much wiser to guard ourselves against it: innocence is like a dumb leper who has lost his bell, wandering the world, meaning no harm."