Overclocking My Brain: Adapting to Faster Audio and Reading Speeds

There's a big difference between reading and understanding. Looks like this person is doing this so they can burn through a whole bunch of books within time frame. Which is fine for a hobby, but while working I don't see the value. Slowing down and reading a coworker's hastily put together email and attempting to interpret their message is where I find value. Speed reading in those situations would probably result in negative outcomes.