Calculators
The olden-day calculators look a lot like typewriters we used in the 1980s. They were hefty, hand clicky-clacky keys, and didn’t allow you to do quick maths. Furthermore, calculating sin, cos, and tan was out of the question as they didn’t come with enough keys for more complex calculations. Math was a lot simpler back then.
Now, we have calculators that come with an assortment of buttons that nobody knows the meanings of. We believe that mathematicians invented crazy symbols to create more keys and sell more calculators. It’s not like you’ll carry around a scientific calculator with you where you go.