[Yajirobe]

A blind mathematician can do revolutionary work despite not being able to see

[troupo]

Here's a logical step you skipped: A blind matematician can do revolutionary work in mathematics. He is highly unlikely to do revolutionary work in agriculture.

[toss1]

Interesting example, as there was an article on HN front page 10 days ago about exactly that - a blind person doing revolutionary work in agriculture. [0][1]

[0] https://www.bbc.com/news/articles/c4g4zlyqnr0o — "I used Lego to design a farm for people who are blind - like me"

[1] https://news.ycombinator.com/item?id=46502269