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ELI5: What is happening to your eyes (& brain) when you are thinking about something & you stare into the distance, seemingly oblivious to what is happening in front of your eyes?(r/explainlikeimfive)
A bit pithy, but I like it:
>“If our brains were simple enough for us to understand them, we’d be so simple that we couldn’t.” –Ian Stewart, The Collapse of Chaos: Discovering Simplicity in a Complex World