So if a man has a son on his birthday the chances are 1in365, foregoing leap years. If that son grows and has a son on his birthday it stays a 1in365. Now for the start of this chain it became 1 in 365 squared. I have been attempting to figure adding the spacing between generations of a fixed setting. So our first gen is twentynine on the birthday his son is born. And the second gen continues the trend on his twentyninth birthday. What becomes the third generations chances to replicate this trend? Now I ask because this is true in my life. My father and I as well my son share a birthday twentynine years seperated. I have mulled this a number of times but the years varibility throws me when we consider the adult males span of procreation. So the discision of off spring becomes a variable but we might assume that evolution has a helping hand and the progression continues. As for male or female it is neither nor to me, but I think it complicates the equation with a multiple of two. So what am I just trying to manage statistics with too little knowledge?
