 For Strevens, idealizations enable understanding because they draw attention to the difference makers that bring about the thing to be explained (Strevens 2017). More exactly, idealizations help us to appreciate the factors that make a difference to bringing about the phenomena we want to explain, and to identifying the factors that do not make a difference. The Ideal Gas Law helps us to understand the Boylean behavior of a gas, for example, even though the law imagines that there are zero long-range forces at work, because the existence of those long-rage forces does not make a difference to the derivation of the Boylean behavior: they are insignificant enough that their values can be set to zero without loss.