"The Little Engine That Could" is a popular children's tale, clearly intended to impart a lesson about the power of positive thinking. Through self-encouragement, a small locomotive is able to pull a train up a tall, steep mountain he originally believed to be insurmountable. If you just believe hard enough, kids, you can do anything! The physics of the story may be a bit dubious, although it is plausible that the work required to haul that train up that track is near the rated limits of the locomotive, allowing for … [Read more...] about Science in Review: I Think I Can, I Think I Can’t