How can I be sure that i'm not just a really well trained Neural Net?

You are a very well trained neural net... The concept is based off of actual Neurons in our brain. Can't tell if you're serious or trolling though lol.

Isn't a brain just that?

A friend of mine actually suggested trying to generate a hacker-news-comment language model next.. sounds like a fun project.

I’ll have to look and see if there’s an archive of them available.

An archive of HN comments? This is it.

Wait, you're saying it's not?

How can I be sure that I’m not in a coma? Nothing external can be believed.