funny.If I find the subject interesting I can pay attention. Lots of classes in grad school were super intense dumps of information, but after about 1.5 hours of intense focus I was exhausted.
That being said my attention span at work is about 30 seconds. Which is fine as anyone who has anything important to say, does it in 30 seconds, but most people here think they get paid by the word so lots of pointless rambling that isn't worth listening to.