Summary
Highlights
Finally, 'change blindness' is discussed, which is related to intentional blindness. It refers to the failure to notice changes in a visual stimulus when direct attention is not given to the change, using the example of the speaker changing glasses unnoticed.
The speaker introduces the topic by stating that cycling in Amsterdam is considered dangerous, with many cyclists not obeying traffic lights. A video clip will be shown to illustrate this point.
A video clip is played, depicting various cyclists in Amsterdam, seemingly showcasing instances where they disregard traffic rules and lights. This segment is accompanied by music.
After the video, the speaker reinforces the idea that the clip demonstrates dangerous cycling, with cyclists not following rules. They claim the video confirms the initial premise that cycling in Amsterdam is dangerous due to 'Mad Men and Mad Women'.
The speaker then reveals the trick: the video was edited with yellow markers to draw attention to cyclists breaking rules. This deliberate focus created an 'intentional bias' and 'confirmation bias', as the viewer was led to confirm the speaker's initial statement. In reality, about 90-95% of cyclists in the clip obeyed the rules.
The concept of 'intentional blindness' is introduced, where people fail to see things they are not looking for. The 'Invisible Gorilla' experiment, where radiologists looking for abnormalities in CT scans missed a gorilla in the image, is used as an example.