In Didier’s last note, he challenged the notion that markets are generally well-behaved. The famous Bell Curve is thick at the base and scarred by violent, recurring shocks. This dynamic reflects randomness, but also memory. And not of direction, but of shock intensity. This week, he tackles a second flaw: the Bell Curve does not just stretch, it tilts. This, he argues, represents another crack in the foundations of statistical finance.