[vkou]

If the 45-year old developer has been with the firm for 15 years, they may have roughly equal competence in writing code, but unless they spent the past decade with their eyes and ears closed, the 45-year old should have vastly more institutional knowledge.

Seniority bumps, x-weeks-vacation-after-y-years-of-service reward that intangible.

[lanstin]

Tho institutional knowledge can cut both ways - being indignant rather than resigned about the problems, and trying to fix things without knowing why all the prior attempts failed, and even being friendly to people that are politically outcast, are all great. Even just bringing novel solutions from outside industries or organizations to bear on problems is useful (tho experience is also a common cause for having a variety of solutions in ones tool box).