Impossible to make a mistake

I was once taught a therapy that stated that it was impossible to cause any harm. On listening to the presenter/salesman my mind returned to a time early in my marriage.

Just after we were married I came home from work to be presented with a beautiful coconut and custard pie. I was given a piece and it tasted fantastic so I asked my wife what it was. She answered it was an Impossible pie.

I asked for an explanation and she told me that it didn't matter in what order you put the ingredients together or how you mixed it, it always turned out the same. It was impossible to make a mistake.

Some months later I returned home to find my wife standing over the kitchen sink looking a plate of black matter. I asked what it was and she said it was an Impossible pie.
I asked what happened and she answered "I left it in the oven too long"
With that I stated " So anything IS possible."

Her reply was "Yes"