Robert McNeesThis is probably the best thing I ever posted on Twitter. The memory is pretty dear to me; I'm sharing it here so it still exists somewhere if that place collapses.
Ricky Reusser@mcnees This is exactly how I learned calculus, being careful to replace my dad’s textbook on the shelf when I was done. It felt so rebellious. And then the pre-calc teacher got confused when we looked at sin(x)/x and I said, “can’t we just use l’Hopital’s rule?”