Has your intuition ever failed you? Mine sometimes has (and I call myself a mathematician). In this post from my blog J delta rho I relate one such case and what it means for traders.
I am ashamed to say that my statistical intuition has failed me. I was doing some brainteasers and came across this one here :
In a country in which people only want boys every family continues to have children until they have a boy. If they have a girl, they have another child. If they have a boy, they stop. What is the proportion of boys to girls in the country?
read more here.