I'd like to be able to bring my 3.8 oz, half-used gel deodorant on an airplane with me. Apparently TSA isn't smart enough to figure out that if it's originally 3.8 oz, and half of it's gone, then it's somewhere under the max 3.4 oz size limit. Also, I'm probably not planning on causing damage to anyone with my deodorant, quite the opposite actually, I'm protecting them from my stank.