Sad that someone had to do a study to find out something that people should know through common sense. On a related note, who cares? Kids eat mud and it doesn'

Sad that someone had to do a study to find out something that people should know through common sense. On a related note, who cares? Kids eat mud and it doesn't kill them; a bit of food that fell on the floor that might have a speck of dust on it is unlikely to kill us.