I travel with a laptop bag that has to be a nightmare for security. All sorts of little pockets and such.
But one thing I've noticed is that while they will ask you to turn on the laptop, they never ask you to plug in the AC adapter.
The adapter is 6x3x2. You could certainly fit enough explosives in that to pack a pretty good punch.
As for the questions, I maintain that it's a classic example of the current "Let's look like we're doing something" administration.
The recent smuggling operations at MIA was the best example of locking the front door but leaving the back door wide open. Had that been explosives instead of cocaine, and had it been coordinated, south FLA would have been covered with flaming wreckage and potentially THOUSANDS of dead and injured.
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"I will not be pushed, filed, stamped, indexed, briefed, debriefed or numbered. My life is my own."