That's funny cause I just signed my contract with a new company today after 2 interviews in which I stuttered so much that I requested to just type what I wanted to say, which they thought was a pretty creative solution. Don't get me wrong, it does happen and it has happened to me but it's not the norm, and the companies that do this just filter themselves out by doing this anyway, you don't wanna be working for people like that. So anyway, don't tell yourself these things, you'll get that job you want eventually.