Please note: This is a companion version & not the original book. Sample Book Insights: #1 Science is a process, not a set of facts. Scientific models are simple to begin with, and as we learn from them, they become more complex. The answers that come from simple models are replaced with the answers that come from more complex models. #2 I use oversimplified models all the time. For example, the Truth about muscles is that they get longer and shorter, which is how you're able to move. Your muscle's attachment points, which are often referred to as origin and insertion, are able to move away from each other without detachment and reattachment, thank goodness. #3 The author of the article was incorrect in saying that the amount a muscle can lengthen and shorten is predetermined. Your body can change the number of sarcomeres between each attachment point, which determines how much a muscle can lengthen and shorten. #4 The human body is a great example of how a narrow perspective can persist even at advanced levels when there is no robust system in place that notifies everyone when there are developments in scientific findings.