Certainly there’s more nuance to them. As I said, I think that “rational self-interest” is fundamental to both of them - it’s nothing close to the sum of either one.
And for the record, I have zero respect for objectivism and a great deal of respect for egoism.
But that’s really beside the point. I’m not arguing for or against either one. My point has been explicitly about the underlying concept of rational self-interest in and of itself, and specifically the fact that it’s consistently misrepresented by its critics (or more precisely by Rand’s critics, who incorrectly ascribe the idea to her and her alone).
I mostly like “rational self-interest” as a sort of framing device.
I believe egoism to be a fact. I think every choice that * every* person makes is self-interested, even those that appear to be entirely altruistic.
Presuming that to be true, there are two things that I consider vital - that people are aware that that’s what they’re doing, and that they focus on doing it as rationally as possible.
And yes - “rational” is a slippery concept. The details are elusive at best, and much more to the point, necessarily subjective (which IMO is the part that Rand most vividly got wrong and Stirner, by contrast, got right). But while that means that a sort of universal formalization of the concept would be difficult at best, I tend to think it’s not necessary - that if people essentially stay within the guardrails of “rational self-interest” and maintain some measure of intellectual honesty and sound critical thinking, whatever it might all shake out to be couldn’t help but be at the very least more broadly good than bad, and certainly more broadly good than the various delusional authoritarianisms to which we’re subjected.
Thanks for the response.