That isn't the point of studies finding results that seem "intuitive"

The point is that designing laws, regulations, guidelines, safety standards, etc, based on "intuition" is not very rational.

I recall seeing some fairly befuddling ones, like "Study finds that a green environment with plants & flowers reduces depression" etc., how do you even quantify this into numbers?

I tell you I feel good if there's more greenery in the city, you want proof to see "how" good before you build more parks?