Rick
Hey...not sure who is right here...but kudo's to you both for a good discussion :)
I swore on a Bible that Muskie man was not going to land a rocket on a barge...(and still doubt I want to "re use" a rocket).....but imo you should never say never.
I can remember when battery powered model airplanes were considered "ridiculous"....
We used to pour that TNT like fuel into them,etc etc...
Now we have electric  drones delivering pizza"s.