Chapter 7, titled Memory, dealt with explaining how memories work within our minds. While everyone knows what memories are, few know specifics when it comes to knowing how it works. For example, short-term memory is much shorter than I assumed; short-term memories only last about 10-15 seconds until it becomes a fuzzier depiction of whatever that memory was. Additional interesting statistics about short-term memory explain the number of things that can be remembered. For example, page 248 explains that "the digit span of most adults is between five and nine digits" and "applies to just about all information we encounter: Numbers, letters, people, vegetables, and cities" (249). Beyond just the three types of memories, chapter 7 describes memory's level of function in regard to age, going into the specifics beginning with an infants' limited memory functions to an elderly person's. Another interesting discussion was one I found very relatable to as a student. When it comes to relearning, or studying in our case, the law of distributed versus massed practice means that one is more likely to learn something if restudied over long intervals rather than only a few times. While this is something I've heard before, this is proof.