I found it interesting how he was describing codes at the beginning and how we use these codes to make the process of thinking quicker. This was relatable because I usually do something similar while studying. So instead of reading and understanding something thoroughly, if it is familiar, I just fill in the blanks in my head using the idea I already understand, especially when I study math.
The analogy he uses explains why we fall into the same habits of thought, since once a memory or pattern is formed, it is reinforced when new information is introduced and falls into the deeper “grooves”.