Nit: propulsive landing was not only feasible but actually done in the late 1960s. On a human-rated Single Stage To Orbit vehicle, no less. Okay, fine, so it w

Nit: propulsive landing was not only feasible but actually done in the late 1960s. On a human-rated Single Stage To Orbit vehicle, no less. Okay, fine, so it wasn't to Earth orbit, but still...!