What is a Blue Sock

Wisdom

The Blue Sock is infinitely wise...

It is one of the Three, it's wisest of all socks, but it seldom appears in the form of a sock.

You may ask: How can a sock be a sock when it doesn't even look like a sock?

You may also ask: So what the !@#!@&^# is a Blue Sock?

Yes, it's your business to ask, so ask you may.