When someone says "That seems(or does not seem) logical" it is not always easy

When someone says "That seems(or does not seem) logical" it is not always easy to know how they define "logical". Is it meaningful at all? I guess the question relates to the use of something that seems to be a looser term than e.g. "deductively valid" or the like, which refers to a particular system of inference and specific rules for determining truth or falsehood of propositions. Do you have any idea as to what the term commonly refers to?

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