Inside Baseball

This is an idiom which refers to a discussion about subject involving highly specialized terms and understanding which would only be known to experts in that subject. People not having a deep, experiential knowledge would be excluded.

The term feels like “inside joke,” meaning some people are on the “inside” and others are on the “outside.” But it actually dates to a style of baseball played in the late 1800s that depending on things “inside the diamond” – bunts, stealing bases, smaller base hits, etc – rather than line drives and home runs.

The style became so specialized, that “inside baseball” came to mean a very detailed knowledge of the sport, and it was applied to subjects beyond baseball from there.

Why I Looked It Up

A friend used the term about an industry analyst who often didn’t frame things in terms a non-expert could understand.

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