EDIT. you mention this  when using the spreadsheet a bit later, and you say that when doing it by hand you usually dont account for the fact that there are 2 people left to act. looks like i should have just kept watching the video for 5 minutes more 😛 i dont think its that hard to tweak the maths even if you are doing it by hand. 

Hey, 

I am watching the MTT math video at the moment, and i think there might be a mistake in the equity calculations of hand 1.

for those that might not remember, the scenario is we are on the button and we are given the option to shove or fold. in the video, the SB and BB are given calling ranges of 18.7%

in the equity calculations slide, the video states that we get folds 81.3% of the time. 

from my understanding of the math, this is wrong because there are 2 people to act not 1.  

if both people have calling ranges of 18.7%, then the probability that either of them calls is (1-0.187)^2 = 0.813^2 = 0.6609, NOT 0.813, so we only get folds 66.1%% of the time. 

this would mean the EV calculations are now 

0.661*103655 + 0.339((0.356*187060)) 

= 68515.955 + 22575.15

=91091.1

So stack if we fold is 90155, stack if we shove is 91091, and we go from being +EV by 6570 in chips, it is now +EV by 936, or just a bit over 1 ante. 

this makes much more of a difference if we are in the cutoff instead of the button as well, because the chances that everyone folds now becomes 0.813^3 = 53.7% which is a long way from 81.3%

is this correct? please tell me if i am wrong. 

PS i havent watched all of the video yet so i am not sure whether this happens elsewhere in the video. 

fair enough – i wrote a big long post, then  set the video going, and then i realised that you pretty much talked about the thing that i was posting about directly after 😀