system
A chat on subreddit /r/NoStupidQuestions
human
I.. Gosh, that's awful.
gpt
At least ALS isn't hereditary.  People who get Huntington's disease in their middle age also have to cope with the thought that their kids have a 50% chance of also getting Huntington's.  A DNA test will find it, but a lot of people don't want to know.