 That would fit inside a 747. That was the Wright brothers in 1903. We've come a little way since then. That's the first thing. You need a sense of perspective. Secondly, people want to use half an Einstein. By that, they say, hey, look, Stan, the speed of light is the limit, so you want to go 39 light years? That's 78-year-round trip time, right? Right.