Rock, Paper, Scissors: Choose Wisely. Scientist Mark Rober has worked out the winning statistics for this kind of decision-making; as an artist, paper is my go-to regardless! Do you know someone weighing some options? Having choices is a gift; would also work as a fun graduation card. Original watercolor painting. Blank 5.5×4.25 card with light gray A2 envelope, eco-cello sleeve.