As a professional engineer, yes, I do know a lot about timing circuits that can be used for anything.
I also know a lot about 14 year olds; I was one once. My friend and I, at that age were manufacturing gunpowder, and all went well until my friend found a German book about catalysts. Then, he was able to make the real deal.
The kid was provocative, answered flippantly, was cleared and not arrested. The authorities did what they had to do. His father is a muzzie activist.
What is the big deal?
The president is acting stupidly by inviting the kid to the white house without having all the information.
...and you, as an engineer, look at that picture and see a bomb instead of a pile of crap? REALLY?