15.
A few years ago at a wedding reception, a couple of us old cranks were telling some teenagers about this stuff, guiding them carefully through successive stages of disbelief. After we finished with the stories about the mainframe computer and the stacks of cards, I told them what I used as a calculator in engineering school in the late '60s.
" Well kids, there were no calculators in our days. Instead we used something called a slide rule. It was two sticks with numbers marked on them. You slid the little stick along the big stick until you were happy with it's position. Then you moved this little slider along the 2 sticks to another place where you read off the answer. It used something called a log scale."
At this point the kids bailed and called it a great big load of BS. Then they decided since this was such an obvious whopper, nothing we said could be believed and everything else we told them was also untrue!
A few years ago at a wedding reception, a couple of us old cranks were telling some teenagers about this stuff, guiding them carefully through successive stages of disbelief. After we finished with the stories about the mainframe computer and the stacks of cards, I told them what I used as a calculator in engineering school in the late '60s.
" Well kids, there were no calculators in our days. Instead we used something called a slide rule. It was two sticks with numbers marked on them. You slid the little stick along the big stick until you were happy with it's position. Then you moved this little slider along the 2 sticks to another place where you read off the answer. It used something called a log scale."
At this point the kids bailed and called it a great big load of BS. Then they decided since this was such an obvious whopper, nothing we said could be believed and everything else we told them was also untrue!