could meet. Let's say one new person a day  during her prime dating years she would have  

met around 10 000 people which in her time was  about 0.00025 percent of the world's population  

but because of geographical reasons if we limit  her available Bachelors to about five percent  

of the world population she had about a one in  twenty thousand chance of meeting your dad not  

super likely and that's just them meeting to  have you the two have to talk to each other  

although not necessary go out on a date although  not necessary and eventually conceive a child and  

the chance that that combination of sperm cell  and egg turns out to be you is inconceivably  

small see your mother has about 300 000 eggs  left by the time she reaches puberty and will  

only release around 300 of them furthermore men  produce hundreds of billions of sperm cells in  

their lifetimes any of which could reach that egg  feeling pretty rare yet or slightly weirded out