The importance of Tuesday
People write articles about strange things. I just read this article called Stories vs Statistics on The Stone (apparently a forum for contemporary philosophers), and I am not entirely sure where I was supposed to end up as a result. But I am sitting here quite bewildered by this statement:
Consider this relatively new variant of the two boys problem. A couple has two children and we’re told that at least one of them is a boy born on a Tuesday. What is the probability the couple has two boys? Believe it or not, the Tuesday is important, and the answer is 13/27. If we discover the Tuesday birth in slightly different intensional contexts, however, the answer could be 1/3 or 1/2.
I did Pure Maths and Biostatistics at University, but I haven't got a grasp on why Tuesday important?