True, but "Amiga made lots of assumptions about the use that ended up..." seemed an odd way to phrase it, given that it was originally designed as a games machine, although the plans were expanded later in development.

As I understand it, its custom chips were a brilliantly clever solution to a problem that existed at the time. It couldn't be called a mistake, because they couldn't see into the future. As a games machine, the Amiga ended up hamstrung by those same custom chips because they weren't the right architecture for Doom and all the 3D games that followed it. That made no difference to its productivity software though, did it?