Comment by lavelganzu

Agreed.

There are technical challenges that are so basic that a programmer should be able to regurgitate them even under normal-for-an-interview stress, and these are still useful filters. (e.g. For a front-end web dev role, we asked candidates to change the web page's text color. Half couldn't.) People who suffer from truly extreme stress at interviews are probably best off treating it as a medical condition to be managed.