This isn't a major revelation, at least to me (trained as a CompE with EE tendencies), but I will agree that I've never heard a really good, intuitive explanati

This isn't a major revelation, at least to me (trained as a CompE with EE tendencies), but I will agree that I've never heard a really good, intuitive explanation of how a bipolar junction transistor works, despite modeling and working with them as current-controlled current amplifiers, as the author mentions. This especially obvious in contrast with MOSFETs, which are IMO easy to understand intuitively.