And the number of people who could be addressed at once was once limited to an auditorium. Rockets to Earth orbit are the bootstrap stage, like electro-mechani

And the number of people who could be addressed at once was once limited to an auditorium. Rockets to Earth orbit are the bootstrap stage, like electro-mechanical relays are to transistors. We will have orders-of-magnitude more efficient methods, and they will bring humanity to space and its treasures to us, without dumping chemicals into the air.