I think I recently heard Cory Doctorow phrase it like this: Both pessimists and optimists are essentially fatalists. Ie.: at the core it's more important to believe you can make a change, than to "know" what "will" happen.
Hope reserves agency.
Optimism and pessimism both presume an outcome regardless of action, and absolve responsibility.
<https://www.ashleighbrilliant.com/book4.html>
That's more about hope as expectation than hope as possibility, I think. And that's certainly Jensen's vibe.
Thanks for the reference.
I think I recently heard Cory Doctorow phrase it like this: Both pessimists and optimists are essentially fatalists. Ie.: at the core it's more important to believe you can make a change, than to "know" what "will" happen.