Is the Tarrasch Defense Good?

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WALKINGLOSS

I recently heard about this transposition in the QGD which turns into the Semi-Tarrasch, the Pseudo-Tarrasch, and the plain Tarrasch. I don't intend to learn them, but has anyone heard/learned about it?

MuneerSallam

I did not understand you :nervous

Toviya

Well, all I know is white usually fianchetos on the kingside, and black usually has an isolated queen pawn.