4 thoughts on “Is this a refutation of the piranha principle?

  1. I agree it’s not a violation. My reasoning is that the piranha principle is about simultaneous exposure to stimuli with simultaneous effects and no interaction, but the video doesn’t achieve this. It does present all the phrases simultaneously, but we don’t perceive them simultaneously, nor do we experience their different effects simultaneously. That’s why the video’s cool: you stop hearing one phrase and start hearing another when you stop reading one phrase and start reading another. It’s freaky because you are aware of the multiple effects, and that freakiness you experience is an interaction effect.

    • Yeah, I agree. As you say, the stimuli are dependent—you can only look at one phrase at a time. There’s no paradox in having large numbers of correlated causes of a particular effect. It’s only if you expect them to be reasonably independent that you should start to see issues.

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