Well, the questioner came from Singapore, which has perhaps the best economic record in the history of developing an economy. And therefore he referred to 15 percent per annum as modest. It's not modest, it's arrogant.
We're the tortoise that has outrun the hare because it chose the easy predictions.
Litigation is notoriously time-consuming, inefficient, costly and unpredictable.
It's not a competency if you don't know the edge of it.
Choose clients as you would friends.
Black-Scholes works for short-term options, but if it's a long-term option and you think you know something [about the underlying asset], it's insane to use Black-Scholes.