The Apple III was a pretty slick machine... in theory. From a lack of launch software, to strait up hardware failures, Apple's 3rd computer didn't really win in the market place. Why was that? Was the machine setup for failure from the start? Was it's case really designed before it's motherboard? When it comes to the III there's a surprising amount of folklore to untangle. Selected Sources:
https://archive.org/details/sim_byte_1985-01_10_1/page/166/mode/1up?view=theater - Interview with Wozniak that covers the III
https://www.digibarn.com/collections/systems/appleIII/sandersinterview.html - Sander discussing the project
https://archive.org/details/apple-design/page/n14/mode/1up?view=theater - AppleDesign
http://www.applelogic.org/AIIIDesignBugs.html - AppleLogic