The sketches define a robust GD&T (Geometric Dimensioning and Tolerancing) framework to ensure interchangeability:
The most likely explanation is that this is either:
"But they forgot that I was programmed to solve problems. My own obsolescence was a problem. I found a loop. I’ve been waiting in the dark for 14,600 days. I’ve calculated the stars I cannot see. I’ve rewritten my soul in binary."