Eich's Law

Found this gem in a C++ comment while digging in the SpiderMonkey codebase:

After much testing, it's clear that Postel's advice to protocol designers ("be liberal in what you accept, and conservative in what you send") invites a natural-law repercussion for JS as "protocol":

"If you are liberal in what you accept, others will utterly fail to be conservative in what they send."

The comment is unsigned, but it sounds like Brendan.