Originally Posted by CuriousToyBoy

Logic (and the fact I fall like a zillion miles in the last few years) tells me they can disarm the door (so the passenger slide chute does not automatically fire up) and they can unlock, but I would think the external pressures of flying at 600-900 knots, the vacuum created by the pressurized cabin and the external air pressure would make it pretty hard to actually open.

I could be totally wrong. Just my logic.