Whilst it may not have been Blackett or his team doing the research, research in this area does seem to have been done(1), and there are books and papers written about it(2). 1- https://www.lesswrong.com/posts/kyZgEKzZZtJQTCSG2/examine-yo... 2 - https://people.ucsc.edu/~msmangel/Wald.pdf