Well, it's ambiguous from my perspective, with no more information, whether or not the behaviour was a genuine disorder or just caused by bad habits (akin to causes mentioned in the currently highest voted post[1]). It sounds like it was the former, in which case I'm sorry. I guess I was also not really thinking about it as a reply to you specifically, but rather to the entire audience of readers here on HN who I wanted to give a heads up on, in the context of your comment, that it's possible to experience lectures in more ways than one.

[1] http://nautil.us/issue/52/the-hive/modern-media-is-a-dos-att...