How many time have we, for example, introduced a "counter acting species" to some "problem species" only to have our "solution" go sideways?

Or look at diets: more carbs, less fats. Look what that got us?

I'm not a Luddite. But how many times do we have to run full speed ahead into the darkness before we realize a flashlight and some reasonable caution might be a good idea? When will we learn?