Cumulative Inequality Theory is a way of thinking about how different groups in society end up having different amounts of wealth, power, and opportunity over time. It’s based on the idea that if one group starts off with more than another group, then they will likely increase the gap between the two, meaning that one group will become richer and more powerful and the other group will become poorer and less powerful. To put it another way, if one group starts off with an advantage, it will be easier for them to stay ahead and get even more advantages, while the group that starts off behind will find it harder to catch up. This widening gap between the two groups can lead to a lot of unfairness and inequality.