You don't consider Hector Ruiz's criminal actions in aiding/abetting insider trading to be "dumb"? Pretty hard to get much higher in the decision tree than where Hector sat, and yet he managed to execute a series of dumb decisions, some of which were criminal, others were quite clearly self-serving, and still others were simply quite dumb given how quickly AMD attempted to distance itself from the outcomes of those decisions (including intentionally delaying 65nm development).
Dumb people really do exist, there is a bell curve to the intelligence quotient of the human species. And sometimes those dumb people do manage to make it to the top of their respective organizations where after they wreak havoc on anything and everything their power leaves them influence. Surely your studies on human history affords a few examples of such?
Plenty. Non-stupid people make dumb decisions, even concurrent ones, frequently. "Frequently" is a function of the number of our species (a lot). It's pretty common in other words.
I believe the ratio of stupid people making dumb decisions is higher in general than non-stupid people making dumb decisions, but it certainly happens.
It is important to realize that it's more obvious(and interesting) for a number of mostly emotional reasons when a non-stupid person makes a dumb/bad decision.
As in, it's noteworthy and newsworthy and discuss-on-a-forum worthy. This is why we have tabloids and lurid sensationalistic news programs.
Meanwhile we don't discuss the knocked up 17yo in Kansas city that just tried meth for the first time last night because she's stupid and expected to make dumb decisions.
Dumb decisions both, but the dumb decision by the non-stupid person is by it's very nature more interesting and fulling understanding the impact of both requires a sliding scale of sorts.
I don't know the person you mentioned so I have no comment on the specific situation.
Regarding the FX cpu line, which I was refering to, I can't design any part of a CPU. I'd hazard to guess that a tiny, tiny fraction of the posting members of this forum can/have. But it is astonishingly unlikely any of the folks that actively designed the FX line were anything other than quite intelligent. It's even less likely that they were not able to test and evaluate it's performance, or even proposed performance prior to construction/release(I'm sure there is modeling software for cpu architecture now right?), compared to what Intel had at the time or what was reasonably common knowledge that they would have in the future. If you don't believe any of that I have a bridge for sale at a bargain price.
Furthering that, I could easily, and do in fact believe, it was decided "higher up" to aim for the performance the FX series has. I can only guess with limited knowledge at the reasons why, but it was not an accident or failure.
Bad decision? Sure, since they let it ride so to speak. But it's a lot of years since the FX came out and I'm still enjoying great performance from them myself rather economically, so I'm ok with it personally.
Intel has more than a couple "bad decisions" if you look far enough back down the timeline. Nobody is immune to it.
That's what I was trying to say in far fewer words, make sense?
As an aside, the best stories out of all the human animals existence, are those of folly and failure/suffering by the brilliant and capable. Not coincidence.