Re: Surely
"If you see feet there is usually also the rest of the person who may suddenly appear in the road."
I was taught this age 10 by my teacher. I have never forgotten it, but it wasn't until I was an adult that it occurred to me to wonder where my teacher learned it. No matter, I have passed it on to my children who with a bit of luck will have no more use for the factoid than I've had these past 30 years. I wonder if they will pass it on? Maybe we'll have self-driving cars by then.