...and Dreamers amongst us.

How to calculate an Imaginary Number, call it I.

1) State your real age, A;

2) Subtract from that an arbitrarily fanciful number of years, Fy;

3) The number you have left is Imaginary!

That is:

I = A - Fy

Have you tried to solve any other number puzzles, like:
Why do we sometimes feel much older than we are

Anyone else know of any?