Unknowable Episode 47: Aphantasia

Can you imagine if your mind's eye was blind? You try to think of your best friend's face or your favorite beach spot or your childhood dog and... nothing materializes. Or maybe that's everyday reality for you and you had no idea there was a name for it or that it wasn't the norm. It's called aphantasia, from the Greek for "no imagination", and it's a damn wild mystery of the brain.