Which technology is more likely - downloading consciousness or colonizing another planet

Which, I agree, does kind of skew the ‘realm of possibility’ quotient. For instance, while I don’t think there will ever be a human-friendly atmosphere on Mars (no magnetosphere to protect, and hold, an atmosphere - even if we could generate one), I can envision some technology that would essentially be a work around coming to pass at some point. But after Mars, there would need to be a technological jump of many orders of magnitude to reach an earth-like planet around another star. Getting there alone, seems almost insurmountable.

But Mars is fair game.

Agree.