The researchers studied insect identification keys to see how easy it is to identify different species of insects like animals and plants. They figured out that certain characteristics of the insects can help estimate how easy they are to identify. By looking at the characteristics of the SPIPOLL insects and their identification ease levels, they found that you can use these characteristics to predict how easy it is to identify these insects. The study discovered a way to estimate how hard or easy it is to identify certain insects by analyzing their specific traits.