Hyperacuity is just a fancy word for our ability to see really small details. Imagine you're looking at a picture of a bunch of lines, and some of them are really, really close together. With hyperacuity, you can actually tell which line is in front and which is behind, even though they look like they're almost touching.
It's like having a superpower! Our eyes are able to pick up on these tiny differences in the way things are positioned, even though our brain may not be consciously aware of them. This can come in handy when we need to make precise movements, like threading a needle or hitting a baseball.
In a way, hyperacuity is like having a built-in ruler that helps us measure things with incredible accuracy. And best of all, it's something that we all have, even if we don't realize it!