This is true for me as well, but the amount of time/effort it takes to get to that point can vary wildly, sometimes being a bit prohibitive, other times never f

This is true for me as well, but the amount of time/effort it takes to get to that point can vary wildly, sometimes being a bit prohibitive, other times never fully getting there for the duration of the job. If I wrote the code, or was present for most of its growth, or have spent whatever time it took in this instance, I am pretty damn efficient with it indefinitely, as long as I don't for whatever reason take a huge break from working with that codebase. (As a ZFS fan, the silly analogy for my brain that I half-jokingly give people here is that I have a high amount of L2ARC)