would yo know what is going on in the brain of a person sitting silently minding his/her own business next to you. Or would any one know what is in the bag that you are carrying,without stopping and searching you. There is a solution to the bags make them transparent and any thing carried must not be wrapped in opaque paper but should be in a transparent bag. That way every one will see what is inside of the bag, but the solution is not follproof, how do one will know that the item inside the transparent bag is not a bomb. we cant make every thing transparent. We cant ask people to wear transparent Clothes so that nothing can be hidden under the garment. (Though perverts will love such an order). So the solution is already half defeated. next comes the brain which can not be made transparent even if it was a possibility there is no way to make thoughts known to an other person. Now comes your question. Aren't they suppose to intelligent enough to stop these kinds of activities even before they happen? Yes they are intelligent but intelligent person depends on leads,once a the intelligent person gets a clue he/she can work out the rest of equation and solve the problem, but to start one must have a sniff of the lead.With out a clue as to what is brewing in the area it is not just difficult but near impossible to suss out what is happening. Every person of the country is a policeman, weather he/she wears a uniform or not, just keep your ears open and eyes peeled, CONT:-