Following this logic, let's assume we can't. Then what are the chances we can plant a self-sufficient colony on a barren lifeless planet, all from a dying civilization on our still infinitely more hospitable homeworld?
How can one be so deeply pessimistic about survival on a planet whose atmosphere we can safely breath and whose climate will likely be more amenable to us than Mars' even in a worst-case global heating scenario, and yet remain optimistic about an independently viable Mars colony?
