Leveraging the Exit of Diabesity: We suffer from obesity and diabetes because we eat too much and exercise too little. Solving the problem is hard but not complicated.

Because hyperendemic obesity and epidemic diabetes have proved intractable thus far, there is a prevailing notion that they constitute a complex problem. Depending on the magnitude and direction of forces applied, a heavy rock may prove quite intractable to lifting. This does not make rock lifting complicated; it just makes it hard.