My grandpa was upset that I never bothered to memorize trig tables. Tried to argue that I am not useful when there isn't a calculator around. I can think of several rebuttles to this, but didn't care to use any. He'd already been retired for some time so I didn't expect him to understand why even a pocket calculator is useless in modern engineering analysis, so memorizing trig was no more than a boring party trick performed by the out of touch nerd.