I suspect way back when that someone was complaining about sending ships to the other side of the world was a waste of money and lives. Where would the world be now with out the pioneering spirit of the explorers of our oceans. And what happens when the habitable zone we are in moves and we haven't done the work to move to the other planets and stars do we seriously want to see our race die like the dinosaurs. What a footnote to our civilization yes we knew what was coming but we didn't move out of the cradle. In this diagram it shows that mars will be entering the habitable zone so this means we can look forward to living on 2 worlds in the future so we need to be developing the technology to take advantage of this and then when the earth is moving out of the Zone we have a place to live I understand it is way off in the future but that is no excuse that's how things get left undone and someone say's what the hell were our ancestors doing didn't they think ahead. O sorry if we don't do the tech there will be no ancestors to say that so I suppose that's ok
. Any how I am all for moving out of the cradle that's my 2 cents worth.
