<< Even if you're not allow to carry any weapons, if there are 5 of you and you're willing to do harm, you still are able to do it. Overpowering the stewards and pilots. Untrained stewards with guns are dangerous too, terrorists can overwhelm these folks and steal their weapons. >>
And monkeys might fly out of their asses too.
All the BS speculation of why people should not be armed are just that, speculation.
If the pilots and an air marshal or two are armed, at least they have a fighting chance, unlike the poor folks that gave their lives Tuesday in the name unarmed and nonexistent security.
Our best bet is locked, impenetrable cockpit doors, and armed undercover skymarshals on board every flight. And I would support the idea of arming the cockpit crew as well.