a new broom sweeps clean, but an old broom knows the corners английский

Значение a new broom sweeps clean, but an old broom knows the corners значение

Что в английском языке означает a new broom sweeps clean, but an old broom knows the corners?

— (Commonwealth) New management imposes radical changes, but those with prior experience have more knowledge.

a | new | broom | sweeps | clean | but | an | old | knows | the | corners