The root cause of thirst is thirst.
The root cause of drowning is drowning.
The root cause of cancer is cancer.
The root cause of falling asleep at the wheel, careening across the median, and taking out a schoolbus full of Campfire Girls is falling asleep at the wheel, careening across the median, and taking out a schoolbus full of Campfire Girls.
I had no idea that these problems could be figured out so easily!!!!!
LOL!