What attention deletes
PARIS IN THE THE SPRING: most people read it clean. The brain shows you what it expects, not what is there.
You see a prediction of the scene, refreshed by glances, not a photograph.
Whatever you are not attending to can change, or repeat, without you noticing.
Knowing this makes you check twice exactly where it matters: proofreading, spotting, comparing.
Then and now
What began as a surprising demo became a pillar of attention science, with courtroom and road-safety implications.
Rensink, R. A., O'Regan, J. K. and Clark, J. J. (1997)
Where it began“To see or not to see: The need for attention to perceive changes in scenes”
Psychological Science, 8, 368-373
Large changes in a scene go unseen without focused attention: the change-blindness effect.
Simons, D. J. and Chabris, C. F. (1999)
Where it began“Gorillas in our midst: Sustained inattentional blindness for dynamic events”
Perception, 28, 1059-1074
Half of viewers counting basketball passes missed a person in a gorilla suit walking through: attention decides what exists for you.
Simons, D. J. and Rensink, R. A. (2005)
State of the art“Change blindness: past, present, and future”
Trends in Cognitive Sciences, 9, 16-20
A decade-later review: change blindness reshaped how science understands attention, perception, and even consciousness.
What we do and do not claim
These are attention effects everyone has, not defects. The game turns them into a habit of looking twice.