I don't think that's the use case. I think it's meant for when you don't find the image you're looking for, but find one that's close, or at least in the same b

I don't think that's the use case. I think it's meant for when you don't find the image you're looking for, but find one that's close, or at least in the same ballpark. Then you can tell Google to find images that are close and it might find exactly the image you're looking for. I personally think it's awesome.