Or is it more about which experiments? In my Think, Try, Learn writing I'm working to go deeper into the idea that "There's no such thing as failure, because you can always learn something," which is thin. It also goes to the "A for effort" idea, which again, doesn't address our desire to have our goals reached.
Going back to the question, you can try lots of experiments, but they might not pan out. That's one of the characteristics of trial-and-error discovery. But how do you know which experiments to try? After all, we have limited energy.