This is a classic scene from "Deliverance", made in 1972 and featuring a young Burt Reynolds. Great movie, but not exactly a "feel good" movie - not for the faint hearted. Anyway, here's the clip - enjoy.
Deliverance - Banjo Duel (link:://:.youtube.com/watch?v=Uzae_SqbmDE#)
Great music . . . this was best scene in the movie.
Reminds me a little of roulette . . . the guitarist is one of the mathboyz and the banjo player is like the rest of us, don't know math but surely enjoy playing.
In the movie the old guy was filling up the vehicle for Burt Reynolds and he then tells him the price $4.99. That was 1972 - 40 years ago. At a rough guess petrol has increased 20 times since then.
Also I use to get into trouble at the servo if I went to fill up my car myself. How times have changed.
I bring this up as a reminder when reading about systems etc. from past decades. Winning $100 in the 60's is probably similar to winning $2,000 today.