Example sentence:

You should only ask them questions about movies and cartoons.

You should only ask them questions about movies or cartoons.

Do the two sentences imply pretty much the same? Or they entail different meanings?

I know, one if using "and" and the other is using "or." But to me, both sentences read like: "movies and/or cartoons are the only topics that you are allowed to ask."


As written those are pretty much the same, and probably both would be heard.

The first might be understood as "only questions about cartoon-movies, not about live-action movies, or tv cartoons". The second might be understood as "only question about movies, or question about cartoons, but not a mix". However, I think these interpretations are unlikely.

A similar problem arises when a maths student wants to express "the values x>3 and values x<1" and prompted the development of the union and intersection notation to avoid ambiguity.

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