For things like that, you really need to have a passion for working on it, and develop a fairly specific skillset, not only in the technology realm, but in the

For things like that, you really need to have a passion for working on it, and develop a fairly specific skillset, not only in the technology realm, but in the medical realm. Hearing aids aren't just stupid expensive earbuds. This is the thing he's working on now. He's working on other things. He has hobbies and he has a job. He's going to do what he enjoys doing. Who cares if it's not useful to you or me. There are other people working on those problems. As a diabetic, I've been fascinated to watch the progress of things like AAPS, Loop, OpenInsulin, etc. But I'm not going to demand everyone working on "useless" things to jump on the thing that I will specifically benefit from.