The study aimed to understand how water moves through soil by looking at how fast it can flow when the soil is completely saturated. Researchers measured this flow in a farm field and found that the traditional method of predicting flow based on soil properties did not capture the true variability in the field. They used a technique called coregionalization to map out the flow patterns and found that the traditional method worked better for predicting flow when the soil was not completely saturated. This suggests that when the soil is very wet, other factors like soil structure play a bigger role in how water moves through the soil.