I remember CS Lewis in "That Hideous Strength" talking about schools; he observed that no parent would let an organization experiment on their children, but tha

I remember CS Lewis in "That Hideous Strength" talking about schools; he observed that no parent would let an organization experiment on their children, but that they can easily be convinced to send their kids to an experimental school, which in effect is the same. That said, you have to compare results from different strategies, or else you'll never improve or react to changing circumstances. I think it's like medical trials; you experiment, but be willing to stop the moment you get good evidence that one option is worse than another.