Links • 27 April 2026

Headspace: can our brains get full?

AI summary

Michelle Spear argues that the brain doesn’t “fill up”; what fails is attention and encoding, which matters now amid constant information overload.

  • The brain filters experience, selecting what to store based on attention, emotion, and hippocampal prioritisation.
  • If attention is elsewhere, experiences are weakly encoded, so the “missing memory” was never properly formed.
  • Memory is reconstructed on recall, not replayed, so shared events can diverge as reconstructions are reinforced differently.
  • “Feeling full” reflects saturated processing limits: finite attention and very limited working memory, like too many tabs open.
  • Computer analogies mislead: memories are distributed across neural networks, constantly reorganised, and altered by new experiences.
  • The implication is to protect attention, and revisit what matters, if you want memories to stick—and to worry less about “storage” and more about retrieval and reinforcement.