shatner. i was lucky enough to get an autograph from bill shatner. the question is when. this is still a pretty exclusive club, but as you noted, rich people were the first people to fly airplanes. these things tend to grow exponentially if it's an investment and a priority. when does a normal person get to do this? is that in our foreseeable future? >> you can run the math. when you have a reusable rocket, then you amortize out the remaining cost of such an enterprise. for instance, if you fly in a boeing 727, they don't just put it in a dumpster and roll out another one for you to fly back stateside. they reuse it as many times as they possibly can. it was the reuse factor that was pioneered by elon musk. all the rest of the billionaires know that's an important cog in the economics of making this accessible to everyone.