A max of two years over a career of some length (so, presuming there are numerous shorter entries) seems pretty short to me, though two years rates as perfectly

A max of two years over a career of some length (so, presuming there are numerous shorter entries) seems pretty short to me, though two years rates as perfectly respectable tour of duty. On the other hand, by three years, I stop issuing any credit for the marginal year. At extremely long tenures I'll be curious to see if the candidate appears stunted for having operated in one bureaucracy for so long. Though, "appreciation" has nothing to do with it, it's really about the somewhat fixed overheads of integration, de-integration, and re-hiring. My sensibilities would be different if costs were higher (desiring longer tenures) or lower (more relaxed on even shorter tenures).