<p>Physics is more likely to be useful than chemistry. Games, simulation, and software controls may find physics knowledge useful.</p>
<p>Regarding macroeconomics, taking an introductory course will give you some idea of what the typical models are, and how much detail is left out in the models versus the actual economy. Macroeconomics also does not lend itself to experiments with controls like microeconomics does (so macroeconomic policy decisions are always subject to “what if?” second-guessing).</p>