I made a discovery while making tea in the morning.

I was making tea for the 4 of us and only my wife has tea without sugar. So, I made 4 cups of tea, all without sugar, poured out her cup and then added sugar to the remaining tea.

And that reminded me of of simple software programs I used to come across when I was the computer liaison officer in the Bank. It's like this:

p/q is a rational number, provided q is not zero. So, while doing anything with rational numbers, you remove the division by zero and then proceed.

While making tea, you remove the one cup without sugar and then add sugar. The exception gets priority! Smaller the exception, higher the priority.

That's logic.