I’m a mathematician too. They’re probably speaking from an intuitive grasp of utility.

“I love life on Earth… but I love capitalism more.”

Ed Balls

Have you seen pictures of the sub? What makes you think the wiring was all hidden?

You joke, but watch this:

https://archive.org/details/take-me-to-titanic

from 29 minutes in. A last-minute adjustment before launch plugged in a thruster backwards; no protocol to check the behaviour prelaunch. They doscovered it when they got to the bottom.