Yes, but there are still plenty of things we can objectively know. For example, skewed reproductive success is obvious in the genes themselves, and the increase in reproductive success for most people is a major benefit of a civilized society. (Also living in groups of people larger than 50 or so rules.)
Edit: 100% support a focus on archaeology. There's some really cool stuff waiting to be uncovered, like the new LIDAR findings in South America. Still, it's absurd to think that ancient hunter-gatherers lived in bliss, except when natural conditions were exceptionally good (not worth the consequences of droughts).
Edit: 100% support a focus on archaeology. There's some really cool stuff waiting to be uncovered, like the new LIDAR findings in South America. Still, it's absurd to think that ancient hunter-gatherers lived in bliss, except when natural conditions were exceptionally good (not worth the consequences of droughts).