The expression "1 + 1 + 1 + 1" represents a simple arithmetic operation where the number 1 is added together four times. This can be understood as counting four individual units. The result of this addition is 4, which is a basic concept in mathematics. In everyday life, this addition can be applied to various situations, such as counting objects. For example, if you have four apples, you can express this as 1 apple + 1 apple + 1 apple + 1 apple = 4 apples. This illustrates how addition helps in quantifying items in a clear and straightforward manner.