[<1/1,000,000th%]

Actually Beethoven went deaf. But I agree with your premise because that's exactly what's happening.

There will be tests for ALS and genetically caused deafness at some point in the future, but they don't exist yet.

[Alamo-Girl]

Thank you for your understanding! It troubles me that such gifted people may never see the light of day in the future. Sigh...