[kdoherty]

There are a few things to consider here. The first quote is distinct from the rest in that it refers specifically to the impact of science on society, which is rarely of concern to the pure scientist, who seeks only to discover more about the world. I'm also not sure that the social problems you describe as scientific were well known or necessarily even established as scientific fields during Feynman's life, I'd guess they weren't. E.g. psychology and sociology have made leaps and bounds in the past few years in being accepted as sciences. Beyond that, there is a distinction we have to draw between things that are science and things that feel like science. It's incredibly hard to reason about causality in such complex systems as you describe, though many have tried by attempting to apply what really feels like the scientific method to the problem, but there are often far far far too many variables to isolate.