When you're working towards a goal, if you do nothing, you're actually slowly moving backwards. Every day you don't study, you actually forget a little bit of what you studied previously. If you put in ordinary effort, such as studying 20 minutes a day, you will combat that loss of progress but you won't make much forward progress. In order to truly make forward progress, you need to put in extraordinary effort - literally more effort than ordinary. Orion explains how he applies this philosophy to preparing for the GRE in this episode.