Programming assignment 7

The definition of variable in the Mathematical term means a number of changes over a certain set of data that has been shown.

The definition of variable in the English term means to have a diversity or to have something that changes.

What comes to mind for me when people say "if" in English terms are what is that person afraid of? For example if a person was to offer up and idea an the other replied with, "Yes but what if..." It leads you to think of what exactly is the person afraid of?