What is your position on eugenics ? What do you think about Elon Musk and his Space X program ? <| sep |> Once the rocket releases its payload , the planning goes from planned mode to on the fly mode . After the release of the payload , the rocket basically has to figure out how to get to the specified GPS point on the ground . That is all done on the fly especially after entering the atmosphere because nobody , not even computers , can predict what the atmosphere is going to do to a rockets trajectory a few minutes before it happens just due to the random nature of the atmosphere with regards to the spread of temperature changes , pressure changes , wind changes . That all is calculated as it ' s happening . Just like a drone does . Of course the masses are incredibly different . But the physics is really the same . In a drone ifspeed x then reduce speed by adding thrust . In a rocket , ifspeed x then reduce speed by adding thrust . All I ' m saying is that concepts are the same . It ' s not THAT amazing . The real amazing part is that they pulled it off as a full rocket mission . Before they finally got to that point , they had successfully landed their test rockets many times . Everyone knew it was possible .