For a wonderful biographical take on this topic try "The theory that would not die-how Bayes'rule cracked the Enigma code, hunted down Russian submarines & emerged triumphant from centuries of controversy" by Sharon McGrayne.<p>She tells a terrific story with a fascinating large cast of characters including Laplace,Bayes,Fisher,Pearson,Jeffries,Savage,Turing and many others. Engagingly told, highly recommended. Could the takeaway "Do you want to solve a practical problem or do you want scientific rigor?"