Zerodha is very good with probabilities.
Both the 60 day challenge and the Crowd Index are based on probabilities.
We know that only 10% of traders make money, but with the 60 day challenge, the trading volume is increased as everybody thinks he will win the challenge but overall Zerodha wins every time from increased trading activity.
As far as Crowd index, so far its acting as a contra-indicator than an indicator.
1, 3, 5 & 7 are in the opposite direction of 2, 4, 6, 8.
Zerodha is not charity organization to give 1,00,000 every week. That is equal to 52 Lakhs a year.
I have nothing against the 60 day challenge (I won it multiple times) nor the crowd index.
I am just saying the odds are in favor of Zerodha in both cases.