I think you don&#x27;t understand the difference between <i>amount</i> of something and
a <i>number</i>. Number is just an abstract concept, and it doesn&#x27;t have any
inherent properties like being &quot;real&quot; or &quot;imaginary&quot;, whatever that means for
you. On the other hand, amount can never be negative.<p>BTW, read a little more about number sets. There are such sets as &quot;real
numbers&quot; and &quot;imaginary numbers&quot;. I think you can find some material in
mathematics textbooks for ground school and high school (probably not about
imaginary numbers, though).