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I am sure he does... The areas he is not so knowledgeable about are: zippers, career planning, cocktail parties, miniature modelling and socializing.

Zippers?

Me too. Barely any knowledge except they go up and then down. We may be similar.

I am sure he understands a bit of the principles behind the zippers, but how to actually make the one in the trousers stay closed is still a mystery to him.