Certainly, we make errors - but those errors are typically errors of oversight and lack of foreknowledge, not errors of decision-making. Alternatively, they are issues of mixed priorities - but that again is a political issue.you yourself acknowledge that we sometimes err - and considering how damaging those errors have been, I think it's entirely rational to spend stats on preventing them
I mean, what are some specific errors that you can remember us making?
The biggest one I remember was invading the Trelli during our golden age, but that was a matter of the thread collectively not having through things through sufficiently; it would not apply to a vigorously debated option like approaching the forest cap.
Another error was the error with the famine, but that is a matter of priorities; some people just felt like blackbirds were SO IMPORTANT that taking several points of stab damage was worth it. (Also, uh, we hadn't quite understood the mechanics there. Or I hadn't, anyways).
You could argue that not having Influenced WW and the like for ages was an error, but to do that we would have had to replace a bunch of actions early on, so I'm not sure we would have made the decision any differently.
Etc.