In the Know is an exercise in which the listener must sharply focus on increasingly more difficult and elusive details of longer and longer narratives, and record them accurately in memory across relatively long spans of time.
For more on how the exercise works click here.
The speech may sound a little strange at first. The speech has been digitally stretched and emphasized in the first levels to better engage the brain in the auditory processing component of the task. Other levels have normal speech, and some levels have compressed rapid speech. Read more about speech processing here.