I'm not making the argument that "they are just like humans", though. I'm merely making the argument that I don't know that they
don't understand.
Someone who was shown a sample of these mistakes would maybe say that the word "understanding" is more misleading than not. I could make the converse argument for someone shown a sample of the successes, though. It seems unfair to judge "understanding" just by what the system can't do, and not by what it can do, while not really applying the same rigor to human babies.
This doesn't scream "not understanding" to me:
> If I'm holding three ice cubes, and I give one to a friend twenty minutes later, how many ice cubes do I have now?"
[... a bunch of correct text elided ...]
> In a practical sense, after twenty minutes at room temperature or in your hand, it's realistic to say that you might have no ice cubes left or just a very small amount of ice/water left from the melted ice cubes.