stockfish - Why do Engines show a fraction for the Depth and Current Node values? - Chess Stack Exchange

Forgive me if this has been asked elsewhere, but I've both Googled and searched here at CSE and cannot find an answer. When I'm using an Engine for analysis (in this case, Stockfish 15), I've noticed

engines - Is Houdini 6 a Stockfish clone? - Chess Stack Exchange

What actually is meant by the Depth of a Chess Engine's analysis? : r/ chess

Entropy April 2022 - Browse Articles

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Stockfish does not understand this position. For humans this is very intuitive. : r/chess