This isn't a paradox, it's just a trick question.
A paradox would be like:
Superman has a date with Lois Lane, and is going to leave to meet her at Midnight. At 11:59:00 he combs his hair so that the part is on the left hand side. At 11:59:30 he changes his mind and combs his hair so that the part is on the right hand side. At 11:59:45 he changes his mind again and combs his hair so that the part is on the left hand side. At 11:59:52.5 he changes his mind yet again and combs his hair so that the part is on the right hand side. If at half of the time of the last combing he changes his mind and moves the part in his hair, what side will the part be on at Midnight?
P.S. It's been a while since my paradox course in college, so I don't remember the real solution.
