Shoes aren't that big; the damage which could be done by a shoe bomb is pretty small, even one built by a highly trained demolitions expert. Likewise the "no l

Shoes aren't that big; the damage which could be done by a shoe bomb is pretty small, even one built by a highly trained demolitions expert. Likewise the "no liquids" thing because of a risk of "binary explosives". Now weight the potential impact of the downside by the cost to society/taxpayers.