Thomas Edison found the fountain of youth and had help from a time traveler who gave him some futuristic things. The traveler didn't tell him the correct filament though, because the universe would explode or something. Edison had to use his own ingenuity.
Ahmed Mohamed brought a scary looking clock he "made", displaying it in a metal case he brought with him to English class, which he plugged in and made it start beeping during the lesson.
Despite not even making the clock, the whole nation is falling over itself, giving job offers, invitations to the whitehouse, thousands of dollars of free shit from Microsoft, and being a national icon.