[chief lee runamok]

"..no one should be able to criticize, say, teachers unless you are quite prepared to drop everything and then become a teacher."

Logically, there is no comparing of soldiers to teachers.

Anyone can pull a trigger.

[Magnum44]

Anyone can pull a trigger.

Try making that claim while under fire in a combat zone. Yes, anyone can pull a trigger given proper attitude, skills, and training. Likewise, anyone can teach given proper attitude, skills, and training. Clearly not many teachers out there today have these prerequisites.