Cat Eating Habits

I have written about this before, but it just never seizes to amaze me.  And, I know that this is not a phenomenon limited just to my cats.  When there is dry food in a cat dish, but the bottom of the dish shows, my cats do not want to eat.  They want there to be more food in the dish, or I have to rearrange the food so the hole does not show.  I do not understand this, but it is what it is.  Hmmm.