On Nov 4, 2013, at 1:01 PM, Dave Cridland <dave@xxxxxxxxxxxx> wrote: > What Larry is saying - or at least, what I'm agreeing with, regardless of whether Larry meant this or not - is that if you've a bunch of people saying "I've implemented this in production, and X needs to be Y", then that is a very hard argument to beat. Historically we haven't just blessed existing implementations if there were things that needed to be fixed. This interpretation of "running code" is a bit problematic because people with running code have a vested interest in the spec not changing. Not always a bad thing, but it can be quite harmful.