>This is the mother of all hacks, the genius device that saved the Apollo XIII crew from dying in their emergency return to Earth,

Not to detract from the accomplishment; but I'm confident that the astronauts would have been able to figure this out by themselves if needed, and didn't do so because of the command/control nature of NASA missions.

The instructions could have been shortened to: Fit the Command Module scrubber filter to the Lunar Module's filter hole. Use tape and plastic to seal the rig for proper airflow.