What ‘Back to the Future II’ got right about tech in 2015

On Oct. 21, a teenager from Hill Valley, CA, will arrive in our time in a flying car, to save his family. He will use our hoverboards and our portable garbage-powered nuclear reactors, and will be there to witness the Cubs wining the World Series over Miami. OK—maybe Back to the Future Part II is not intended as prophesy, but it did get a lot of things right when it came to the technology we use in 2015.