Does my dad take me for an idiot or what's his deal?

Time and time again I will tell him information of whatever topic he's inquiring about and he completely disregards it. Then some random strangers tells him the exact same information I tell him and he listens to that person. Not only does he listen to that stranger but he comes back and tries to school me on something I told him from the beginning and tells me "we didn't know" 😒. It's infuriating and exhausting to deal with him sometimes.

Does my dad take me for an idiot or what's his deal?
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