When I was a child, there was a commercial on (black and white) TV that had a very happy woman telling a friend about some beauty product, and then that friend told several friends about it, "and so ...

I have always assumed that people understood that compound interest is a textbook example of exponential growth- Any small non-zero rate such as 2% gives the classic exponential growth curve we are ...

Suppose you saw in the news that there was a new disease, and one person was hospitalized with it. There had been no hospitalizations before today—and yet, there had been 12,800 positive tests today ...