Anyone out there ever think that science - physics and engineering wille ver invent a commercially usable anti-graivty system that can be used to put heavy payloads into space, so that large inter-planetary space ships can be uilt, rather than using conventional chameical rockets for lift?
Anti-Gravity would be wonderful, but it is so far outside the realm of physics currently that it is little better than magic.
At present our entire technology derives from manipulation of Electromagnetism and virtually nothing else. We have no technology based on the Strong Nuclear force or the Weak Force, and we haven't a clue how to manipulate gravity.
Also, the ramifications of being able to manipulate Gravity would probably render our very view of space and time and matter as antiquated to the point where we probably wouldn't even have a need to worry about payloads or distances any more. The change in our perception of physics would be that profound.