I think that the problem is that the sorites paradox continues to manifest even if it is applied only to a single person. Any reasonable person will agree that

I think that the problem is that the sorites paradox continues to manifest even if it is applied only to a single person. Any reasonable person will agree that one grain of sand is not a heap, and that some sufficiently large pile of sand will a heap; but I think that few reasonable people would be able to pinpoint, either a priori or a posteriori, any particular number of grains as constituting the minimal possible heap. If you apply this probabilistic interpretation to a single person, then your conclusion is that even individuals (rather than communities) attach words to concepts only probabilistically, which is not a paradox but is, I think, rather disturbing.