The only truly secure system is one that is powered off, cast in a block of concrete and sealed in a lead-lined room with armed guards - and even then I have my doubts.
不要小看孩子，他们比我们想象的要聪明得多。
问题不是“我们想知道关于人们的什么？”，而是“人们想告诉我们关于他们自己的什么？”