Another way of putting it is, is there some humongous problem that we cannot yet get computers to solve, yet we can split into tiny 10-second chunks such that each time somebody solves a CAPTCHA they solve a little bit of this problem?
言い換えると 現在のコンピュータでは解けない 巨大な問題を10秒分の断片に分割して CAPTCHA入力の際 人間に 解かせられないかと考えたのです