That's optimistic. I usually see it at about 4 years, which is absurd, and directly leads to the 26-year-old senior dev I worked under a couple of jobs ago, who

That's optimistic. I usually see it at about 4 years, which is absurd, and directly leads to the 26-year-old senior dev I worked under a couple of jobs ago, who's primary concern in code reviews was that I always cache my jQuery selectors "for performance reasons".