There is an understanding that there is a difference between the model and reality, and the models have realms of applicability, and underlying assumptions. Th

There is an understanding that there is a difference between the model and reality, and the models have realms of applicability, and underlying assumptions. That doesnt mean the problems are imaginary, they are real, with real consequences. The economic question of how many people will starve if we impose a new tax on food is a real one. The attempts to model the situation and derive an answer are imperfect. That doesnt mean they cant be useful, or even provide accurate answers. There are domains where spherical cows are entirely appropriate.