The calculator.

Let say you want to know if you can go out tonite. And you still have to do grocery. All those little cans and the vegetable better bring some help. Mine as well grab the calculator and see if you really need all those items. Simple as that the age-old apparatus is put to work. We take it so for granted nowadays that it is not even considered a tool, but more of an accessory. Common for any schoolwork or carpenter or an economist. Science would be stunted to say the least. Forget a rocket program.