Ignorance is fine. It's trying to force your ignorance on others (like that teacher did) that's bad. If you don't understand the issue, don't forcibly confiscat

Ignorance is fine. It's trying to force your ignorance on others (like that teacher did) that's bad. If you don't understand the issue, don't forcibly confiscate the free software and yell at people. I don't understand (many aspects of) biology. So, I don't go confiscating biology textbooks, claiming they are full of lies.