🚪 Doors delete your thoughts

Radvansky & Copeland (2006): in a virtual world, people who walked through a door forgot more about objects they were carrying than people who walked the same distance in one room

Radvansky, Krawietz & Tamplin (2011): same result in real rooms. The killer detail 🔪 walking back into the original room didn't restore the memory. It's the crossing that deletes, not the new place

McFadyen et al. (2021) replication: the effect mostly appeared when the mind was already busy. Idle brain, doors are harmless. Loaded brain, doors cut 🎯

The bigger twist 📱: Gloria Mark's research found attention on one screen now lasts \~47 seconds on average. Every app switch, every tab, every notification is a digital door. We walk through hundreds a day while loaded. That's the rare insight nobody connects 😀