Elementary reference in the first few minutes of Watson !

Purposeful or not, for us Elementary rewatchers this seemed like a reference.

https://preview.redd.it/rt98gglb3zfe1.png?width=1728&format=png&auto=webp&s=7cdc55a3a0fd8730cff406dd19ccc9982c1b8c7c

https://preview.redd.it/16lx9flb3zfe1.png?width=1094&format=png&auto=webp&s=fd65e9ee5c1fec1ada837797c4095dfd07ce2c62