Remember the disaster with the perl6-documentation list?

I remember it as the "Oh my goodness we have to document absolutely every part of the language starting from the absolute simplest bits and not moving on until we have those things absolutely perfectly complete oh by the way the bungee leader will disappear for three months" list.

It helps if you imagine Rocky J. Squirrel responding with "But Bullwinkle, that trick never works!"

Perhaps a more charitable lesson to learn is "Don't start a mailing list until people actually do work."