Who uses their brain more?

Mi

I was talking to my father last night about not continuing to pursue psychology, but rather change my major to Intelligence concentrating in Political science. Anyways, my dad said that teachers use their brains more than attorneys. I won't explain his reasoning because I want to hear your initial thoughts. At first, I disagreed with him. I asked my boyfriend and he said "teachers of course". I guess I was shocked at these answers and wanted to see what y'all thought? Please explain why!

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