Interesting vid from Alexander Grace :
https://www.youtube.com/watch?v=yqJOGQBQWAU (10m42s)
Based on the study :
https://www.mikeshor.com/courses/gameth ... lpigs.html (quick read)
The big pig doesn't have a dominant strategy. If it expects the small pig to Wait, it should Press and if it expects the small pig to Press, it should Wait. Yet, the big pigs quickly learned to go straight to the lever each time. Apparently, the big pigs realized that the small pigs have a dominant strategy to Wait which left the big pigs with little choice but to Press the lever.