Dumb Rules

[PokerBob]

Many rules/laws we view as dumb, but there likely is a reasonable/plausible explanation for them. Some, however, seem to make no sense whatsoever. Post them here.

I just got back from Vegas, and was told I cannot listen to my ipod while the plane is taking off or landing. 15 years ago when I would fly home from college I could listen to my Walkman without possibly bringing down the plane, but apparently my ipod is much too dangerous. I find this rule to be dumb. What am I overlooking?