Why is it so common to join extremes without watching a guide first?

[Deveryn]

Is it really saving time to assign positions prior to pulling instead of between wipes? Either way you still need to assign positions, and nothing's preventing people from going "oops i forgot my position, can we redo them real fast" and causing the group to have to assign positions twice in the end.

Also, choosing as a group to assign positions before pulling does not make a pull any less blind. Someone coming in to a blind run and trying to assign partners before we've pulled, because he knows partners are needed, is what makes the run less blind, and that's what I kicked him for.

That's some very flawed logic. The fact is clocks, groups and partners are a regular part these encounters. That's not a blind run. That's an ignorant run.