It's part of the huge, finger in the air balancing act of developing drugs. How much money do you put into early phase 1 and before stuff that may or may not ma

It's part of the huge, finger in the air balancing act of developing drugs. How much money do you put into early phase 1 and before stuff that may or may not make it. And what's the market if it does make it. Because the ones that do make it have to cover the cost of all the ones that don't, who's learning it took to get to this point.