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Bobj is wrong! Gravity always wins out over entropy and the final state of our universe will be very cold with just black holes hoovering up the few remaining atoms and lowly evaporating with long wavelength radio waves and just the ocsional brief and small flash as one finally evaporates. This will take many orders of magnitude more time than the 13 billion years that the universe has been around already say at least 10e50 times!
As for clifford without a space elevator it will never be possible for a significant number of people to escape earth's gravity and even with one in synchronous orbit the extra velocity to escape still requires a lot of extra energy. so the vast majority of the earth's population will always be confined to the earth's gravitational well.