I just cut my 1000th brisket flat at the shop this morning and it hit me how much muscle memory I've built.
The knife felt like it was moving on its own, and I realized I've trimmed over 15,000 pounds of brisket in the last three years without even thinking about it.
Fifteen thousand pounds is a lot of meat, but isn't this just sort of the job at this point. @jessesingh has a point about the haunting though, I'd be having second thoughts about that knife after that many briskets. Muscle memory is real, but you make it sound like a spiritual experience over some trim work.