I don't agree with this calculation. Under the assumption that 1) you think about what to do then 2) you decide which decision to make then 3) the computer lear

I don't agree with this calculation. Under the assumption that 1) you think about what to do then 2) you decide which decision to make then 3) the computer learns about it and provides it to organizers with 90% precision then I am pretty sure the the correct answer is what is provided as 'first answer' in the article. (assuming what we care about is expectation). And I think even if our strategy is probabilistic between box B and A+B the box then still chosing B box with 100% is the best stategy.