Cabel, I was thinking: If Leo just has raw data, and there is a statistically significant positive result; then, one could make a near certain conclusion, even without knowing specifics. Same would be true for negative results.
Placebo would only serve to depress any positive data.
Leo would not likely make any certain statements until official data is final. However, he could still indicate confidence. Which he has.
I'm just thinking out loud. This thinking is not influencing my overall investing position.