In the computer, we use 1 to represent true and 0 to represent false.
We need to use true and false to check facts such as if 100 is greater than 40
We also need and, or, as well as not to connect multiple facts such as "if 100 is greater than 40 or today is the Easter Sunday"
We call true and false boolean values. We call and, or, not boolean operators.
If we mix boolean values and boolean operators together, we get boolean expressions.