Who knows? What I don't understand is what they're going to do the first time they find someone smuggling a potentially explosive gel on to a plane by filling a condom with it and secreting it in a body orifice. At that point I think (or at least hope) they'll realise that the current knee-jerk approach simply isn't useful.

In fact please can someone hurry up and do that so we can get through this as quickly as possible?