@m3t00 @sushee I worked on a small part of the ground segment of a major weather satellite system nearly 30 years ago. The printed requirements filled literally a shelf of folders, detailing protocols, font usage, colours, etc.
We dove into them for weeks, trying to understand the system until one day someone came across a single powerpoint slide that showed that the satellite didn't just transmit raw image data to the ground, but was also a comms relay. Suddenly it all made sense!