Erin McCarthy at Popular Mechanics was curious about four scientific questions from the "Lost" season finale:
- Is it possible to ignite dynamite with a gunshot?
- Would a grenade really work under water?
- Can you really break someone's neck with your legs?
- Would Rousseau's radio transmitter really have blocked the sat phone signal?
I knew the answer to that last one was "no," since they'd have to work on completely different frequencies. But read McCarthy's explanation for that and the others here.