Imagine every conceivable image is laid out on the ground, images which are similar to each other are closer together. You’re looking at an image of a face. Some nearby images might be happier, sadder, with different hair or eye colours, every possibility in every combination all around it. There are a lot of images, so it is hard to know where to look if you want something specific, even if it is nearby. They’re going to write software to point you in the right direction, by describing what you want in text.

Here’s an example of this sort of manipulation: https://arxiv.org/abs/2102.01187