Give a world atlas/globe to ANY average guy in FATA and ask them to try find America on it.
Although, you are asking a hypothetical question, your answer will not be any different from what you get from ANY average guy in America. It is not about Geography, though.
Indeed, the innocent common man dying on the border does not even have the capability to get hold of +500Kgs of prime explosives to blow up other innocent people who are in no way connected to the crime committed by others. This is the work of heinous criminals who are taking the opportunity to spread chaos in our beloved country.