Cannot decide if sarcasm or serious. The PDP-11 computer was an a good architecture for the time, but "most elegant modern architecture" is so dismissive of everything that has been developed in the past 50 years as to border on the absurd. The instruction set of the PDP-11 (MACRO-11 the programming language) , and the CPU architecture that went with it, was kinda shit to be honest. It was groundbreaking at the time as many systems were, and firmed up many of the standards that we have today, but I wouldn't ever describe the CPU as elegant. Influential, perhaps.