Earlier quoted context omitted.
>As no manned missions to Mars have ever proven this conjecture, it is still entirely speculation on your part. But we do have manned missions to other celestial bodies, and we have sent and landed probes on Mars. I'm confused as to how a manned mission to Mars is "entirely speculation". >no precedent to assume it ever becomes possible This isn't a qualifier for what is possible. We knew it was possible to go to the…
Manned, i.e. containing people (men).
um, yes?