When will SpaceX actually land humans on Mars?

When will SpaceX actually land humans on Mars? what year does man first step set foot on Mars I think the soonest would be 2 9 29 yes and I don't think it's more than two to four years beyond that and that's not an unmanned that's that's a human being putting his foot on the surface yes best case would be 29 and what do you what do you put the odds of finding either alien life or evidence of alien life I don't think we're gonna find aliens OK but do we find ruins do we find remnants we may find the ruins of a long dead alien civilization that's possible and we may find uh subterranean microbial life that's possible alright if man lands on Mars in 29 how soon after that do you land on Mars remains to be seen I'm not sure the important thing is that we build a self sustaining city on Mars as quickly as possible the key threshold is when that city can continue to grow continue to prosper even when the supply ships from earth stop coming at that point even if something would happen on earth it might not be World War 3 but it might be that uh a bad virus yeah no yeah might not be anything what I'm saying is like like like say civilization could die with a bang or a whimper it may be that civilization dies with a whimper rather than a bang um and simply loses the ability to send ships to Mars um but so so you obviously need Mars to be become self sustaining and be able to grow by itself um before the resupply ships from earth stop coming that that is the critical civilization threshold beyond which um the probable lifespan of civilization is much greater and how close are we technologically to be able to do that to have a self sustaining settlement uh on the surface of Mars I think it can be done in 20 years