Just like reading at the front of the class. He held the book out, squinted ever-so-slightly, and subconsciously moved it away from his face as he read from the first paragraph he laid eyes on:

"Some Pokemon moves are classified as HM moves. These moves capitalize on a Pokemon's particular powers to allow you to access areas on the field you wouldn't be able to get to normally. You just need to have the right gym badge if you want to legally use a particular HM move..."

How was this supposed to figure out what was ailing him?