RE: AI isn't as smart as you think

Yes, technically it is wrong, but only by expression, the logic is accurate.

It correctly realizes there are two total sisters and Claire is one of them, but it inaccurately answers the direct question of "How many sisters does Claire have", but it comes to the correct conclusion.

This is another example how AI isn't as smart as people give it credit for and why AI isn't going to replace developers any time soon. You need to be a pretty good developer to take advantage of AI for developing as it frequently makes mistakes and you got to know what you are doing to identify and correct these.