A touch of randomness is more than easy to generate in social media: because the algorithms aren’t perfect, randomness is intrinsic. But beyond that, feeds are usually calculated to include an additional degree of intentional randomness. The motivation originally came from basic math, not human psychology. Social media algorithms are usually “adaptive,” which means they constantly make small changes to themselves in order to try to get better results; “better” in this case meaning more engaging and therefore more profitable. A little randomness is always present in this type of algorithm.
