No, the liquids wasn't a bad plan, though if you read the current thinking about their plans its not as smooth as it sounds, you mix the liquids and the explosive is a crystaline white power, which needs to be dry before it'll detonate. It sounds like you'd be in the toilet for a while and you'd need a lot of liquid. If I remember correctly it also gives off fumes in a big way. It also isn't original really but still not bad,when you consider the problems of mixign the explosive as required on the plane though it looks a little farcical...