Unless humans with back pain procreate less than those without, then I doubt it's going to get any better in 20,000 years. At least not due to evolution of the

Unless humans with back pain procreate less than those without, then I doubt it's going to get any better in 20,000 years. At least not due to evolution of the human skeleton. Technology may help though, assuming we don't do something stupid and stop our technological progress. (like, for example, electing a president that thinks saving money in the short term is more important than long term sustainability)