That guy, Charles Platt (<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Charles_Platt_%28author%29" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Charles_Platt_%28author%29</a>) probably taught more people about electronics than most. I believe the schematic is in his breadboard-friendly style, which takes a bit getting used to but is optimized for easy implementation on a breadboard.<p>So, I guess CamperBob2 is right that it&#x27;s optimized for building rahter than theoretical analysis. Usually the text does a pretty good job of explaining his circuits.