When all actions are used for feedback, the consequence of making mistakes will be a corrective and appropriate response, because everything everybody does matters. … The more selective you are in the feedback you accept, the more insane your reasoning will become as you will necessarily reject corrective feedback that would have led to better reasoning.

Re: Lisp's future (Usenet article).

https://groups.google.com/forum/#!msg/comp.lang.li...[groups.google.com]