A disability is a condition resulting from a mismatch between an individual and his/her environment.In the world of software user interfaces we might say:
A disability results from a mismatch between an individual and the user interface they are stuck with.I would add:
Usability is the art of minimizing this mismatch.and perhaps conclude:
If we can eliminate all the mismatches then we can eliminate disability.This last one might appear silly yes, but remember I am toying here with new definitions. I think there are worthwhile reasons for shifting perspectives on disability, but I'll save that argument for a later post.