Folks, consider this:
Mr Terrorist has your family hostage with guns to their heads, and tells you to take 'contact lens fluid' and 'toothpaste' with you through security, and deposit it in the cistern of trap 4 in the Departures bog of terminal 3 for one of his mates to pick up, mix, and blow an aircraft up with.
OR
Take it through crew security, deposit it in a FOD bin or similar, for one of his baggage handler mates to pick up......
Food for thought huh??
While I completely agree that 90% of the security is completely ineffectual, I feel it is important to see the 'big picture' occasionally, and that maybe there is a reason for some of the seemingly crap rules!
And before someone says 'well done for giving the bad guys an idea' do you honestly think they haven't already thought of it?