The conclusion that I draw is slightly different. We might not ever be able to deterministically predict human behavior, but that doesn't mean it's useless too identify Trends and develop heuristics.
The problem is entirely with people confusing and treating Trends or heuristics as deterministic facts when they are far from it
I agree but also the opposite is happening. The ability to identify Trends and Heuristics is seen as 'not scientific, or exact enough', and thus tossed out as worthless. So trends/heuristics can be both, over-played, and under-appreciated.
So guess there are two camps in the thread:
Psychology is either over-stating its findings, 'trying to be too exact when exact is not possible', so it's bad science.
Or when it does find something, it's deemed not exact enough, 'how dare you report a simple heuristic', so it's bad science.
The problem is entirely with people confusing and treating Trends or heuristics as deterministic facts when they are far from it