Aldrin is right in everything except how many people should go and how fast. People who adapt to Martian gravity will find it hard to return to Earth anyway so the first wave should be scientists and engineers who are innovative in their response to emergencies. That should be followed by the first wave of families and more able-bodied men and women. The overall colony should be 5,000, not 30, since they will have to be able to take care of their medical needs, raising food, manufacturing, and everything that a small town needs that is far from civilization.
We should begin by building this colony here on Earth. The technology needs to be established and tested and the bugs worked out before we send it to Mars. Best place to build it is under the ocean so there is an acceptable level of risk for the colonists and the designers. Send it to Mars when we have the ships, but start building it and testing it now.





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