That's a worthwhile goal in itself, sure. But I think you're reading too much into what I said. I never claimed the two situations were identical or analogous

That's a worthwhile goal in itself, sure. But I think you're reading too much into what I said. I never claimed the two situations were identical or analogous, just that "can't" is something that needs to be periodically re-evaluated. But if you do want to press on with sprinting events, note that they have been using start signals with both an audible and a visible component for a while, to accommodate people who may not be able to perceive one or the other. Back until we had electronically-triggered lights, you "couldn't" have a deaf competitor compete, modulo smoke from the starting gun. Now you can.