If you have the functions this is one kind of problem, but if you don’t it’s another. In EE we learned something called up-down analysis. Basically you turn a

If you have the functions this is one kind of problem, but if you don’t it’s another. In EE we learned something called up-down analysis. Basically you turn a knob and see what happens to the result! Write down all the changes. Then you can at least get a sense of the change at a certain time. This is good for adjusting the angle of a platform with several screws, for example.