What does in theory mean?

phr. If something is possible in theory, it should be possible, but often it does not happen that way.

in theory

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Tags CEFR-B2

phrase

If something is possible in theory, it should be possible, but often it does not happen that way.

In theory, the plan should work perfectly, but in practice, there are always unexpected problems.

If something is possible in theory, it should be possible, but often it does not happen that way.