Pyloric Stenosis is an interesting and well understood condition. It affects boys much more than girls. In fact, it often affects the first born males almost 4 times more than others.
Imaging driving down the road, a small animal jumps out in front of your vehicle – you slam on the breaks and narrowly miss the animal. You determine that you would have easily missed the animal except your breaks are screeching and they couldn’t slow the car down effectively.