Comment Well, how would you like if it your "science" (Score 1) 375
basically disallowed the possibility of ever conducting a controlled experiment?
Economists scour the world for "natural experiments" and are beside themselves with glee when they find one. (Best example I can think of: when one state raised its minimum wage and a similar, neighboring state didn't. What was the impact on employment? Spoiler: little or none.)
Economics brought much of its trouble on itself by trying to come up with equations to describe how economies work. In order to make the math work, they had to make some ludicrous assumptions, like the mythical "rational man", and the whole concept of "equilibrium". More recent work in behavioral economics and Beinhocker's Complexity Economics has let some of the air out of these cheats, but the old joke still holds: "That's all well and good in practice, but let's see how it works in theory!" Many of the more math-oriented economists studiously ignore any connection between their models and the real world.