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Now I'm very interested why 20% wouldn't write down Colgate. Did they know something the others didn't?

They probably just forgot about it.

If someone asked you to write all the brands of X that you've ever used, can you remember all of them, especially if they were nearly equivalent in quality and use case?

I might forget about Aquafresh or Close-up or something, but I'm pretty sure that I would remember Crest and Colgate- especially if I was a dentist. It's like leaving Honda off a list of reliable cars. Hard to believe it's an accident for any reasonable sample size.

All I know is that I buy the cheapest multi pack at costco once a year. My teeth are fine. :D

Are you a dentist?

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