If someone says 10% by 2030, we disagree, but it would be hard to find something to talk about purely on that basis. (Of course, they could have other more specific beliefs that I could argue with.) If they say, IDK, 25% or something (IDK, obviously not a sharp cutoff by any means, why would there be?), then I start feeling like we ought to be able to find a disagreement just by investigating what makes us say such different probabilities. Also I start feeling like they have strategically bad probabilities (I mean, their beliefs that are incorrect according to me would have practical implications that I think are mistaken actions). (On second thought, probably even 10% has strategically bad implications, assuming that implies 20% by 2035 or similar.)
If someone says 10% by 2030, we disagree, but it would be hard to find something to talk about purely on that basis. (Of course, they could have other more specific beliefs that I could argue with.) If they say, IDK, 25% or something (IDK, obviously not a sharp cutoff by any means, why would there be?), then I start feeling like we ought to be able to find a disagreement just by investigating what makes us say such different probabilities. Also I start feeling like they have strategically bad probabilities (I mean, their beliefs that are incorrect according to me would have practical implications that I think are mistaken actions). (On second thought, probably even 10% has strategically bad implications, assuming that implies 20% by 2035 or similar.)