Short Earth
Long Mars
Really, who cares.
Long Mars
Really, who cares.
Quote from Pekelo:
Looks like no one knows or even understands probabilities here.
5. Worldwide pandemic (plague, take your pick) wiping out 2/3 of humankind.
It has signifficantly higher chance occuring than any of the above and would take care of the problems for the lucky survivors...