I was a little surprised to find this error, and I tripple checked myself just to make sure, but there seems to be an error in calculation in the Math strat post. This is incredibly misleading for those who are trying hard enough as it is to catch on with topic at hand.
3/4 way down the page when the first tree diagram is being explained, Hasenbraten makes a mistake when working out the EV.
He states that '0.5 • 0+0.33 • 1+0.16 • 0.16 • 3+0.16 • 0.83 • 2 = 0.5 • 0+0.33 • 1+0.16 • (0.16 • 3+0.83 • 2) = 0.694.' when infact it equals 0.6724
I've worked this out several times and also had a second opinion on it. We both came to 0.6724 after double checking each time.
Please fix this 
