Ask a dozen people what intelligence is and you’ll get a dozen answers. And all of them could be correct, because what entails intelligence varies from organism to organism. People automatically think of human intelligence and stop there. But, as I indicated above, intelligence has evolved from the most basic of automatic reactions through an infinite gradation of responses to the environment.
Run the tape backwards and you may reach a point where you might say that intelligence is not to be seen. Just as, if we ran the tape backwards, you might say that what we have at some point in the past is not what we could descibe as human.
But what that animal would develop into would be human. And whatever it is that the organism posessed that you said stretched the definition of intelligence too far would develop into intelligence.
Other than that, how on earth do you think it might have arisen?
No, they wouldn’t all be correct, at least not for the purposes of this discussion and the quality we’re trying to single out, which just isn’t a matter of computation or a scale.
I for one don’t hold to the idea that the natural world is devoid of teleology or final causation (something philosophical materialists deny), so it is conceivable that the power to cause rational intelligence to emerge were in the natural causes (either eminently or virtually) that led to the evolution of human beings. [There’s also the possibility of a divine addition to the natural processes at some point in our evolutionary history, but I prefer not to assume that.] However, if there is final causation in nature, I’d have to conclude it originates from an intelligent origin, anyway. I haven’t gone into why here.
But this proceeds from my conclusions about philosophy of the mind. If final causality is absent from nature, and if there is no such thing as final causality even in the mind, then I’d have to conclude with eliminative materialist Paul Churchland that there is no such things as a mind, or perceptual experience, to begin with etc… No actual
intelligence. You and I aren’t actually having a discussion. We’re not exchanging thoughts or ideas (as those don’t exist). There are no concepts or even information in these exchanges.
Granted, not everyone who denies final causality is an eliminative materialist, but I don’t think other positions which deny final causality in nature but try to conclude that there still is a rational mind are that coherent.
But this isn’t really a philosophy of the mind topic, though I think one would need to have a discussion about philosophy of the mind and causality in nature before one can get to the conclusion “non-intelligence can’t cause intelligence.” And a mistake everyone’s making with that statement is assuming that it’s saying that the non-living processes and things which led to our evolution must themselves be intelligent, and since they’re obviously not, “gotcha!”.