Assuming this is actually the case, I guess the argument is about which has a better ROI. If, for example, your first category is proportionally 1000% more like

Assuming this is actually the case, I guess the argument is about which has a better ROI. If, for example, your first category is proportionally 1000% more likely than the second, and the return on investment is less than 1000% in the second category, then it makes sense to fund the first category disproportionally. Not saying that is the case.