The discussion was on the probability of human existence through evolution.
The claim was sense we are here the odds are 1:1 this would be true if there was no other explanation on the floor and if science had only looked at one planet for life. So if evolution was the only argument on the floor we have looked at many other planets and moons for life. So the 1:1 would still be incorrect. The other issue is you cannot use evolution as the only possible way we are here to day for there is another possibility out there and that being God created us so yes his math is wrong so zip he has to start back at zero.
But anyway, how do I zip my back to zero?