system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do the numbers on my digital alarm clock or similar digital numbers bounce and move when eating crunchy foods but nothing else in my vision does?
gpt
Everything else in your vision is there the entire time you're looking at it.

The digital numbers (like many electrical displays) are operating at a specific frequency of being lit and unlit so are not entirely present the entire time you are looking at it. Normally you don't notice because your brain paints over the gaps and sees a constant image, but when you eat crunchy food, the subtle shaking of your head removes just enough spacial information for your brain to do a good job guessing the position. So it looks wobbly.