We, as in humanity, haven't even figured out how to support the people we already have. We never have. Even without the threat of climate change, billions are under-nourished.
High tech might alleviate some issues, but the root cause could be addressed through existing social technology. For example, say we had AGI robots that could do all the work that humans do today - if owned only by rich capitalists, the quality of life for many may actually drop. But, combined with land value taxes and universal basic income, the result would likely be an increase quality of life (unless it turns out humans are willing to keep increasing population as long as the amount of aggregate suffering is below a certain level). AGI robots don't necessarily make things better. But social tech like LVT+UBI could meaningfully make things better, and, it could do it today (without the need for more "geniuses").
High tech might alleviate some issues, but the root cause could be addressed through existing social technology. For example, say we had AGI robots that could do all the work that humans do today - if owned only by rich capitalists, the quality of life for many may actually drop. But, combined with land value taxes and universal basic income, the result would likely be an increase quality of life (unless it turns out humans are willing to keep increasing population as long as the amount of aggregate suffering is below a certain level). AGI robots don't necessarily make things better. But social tech like LVT+UBI could meaningfully make things better, and, it could do it today (without the need for more "geniuses").