It's all invented...

From The Art of Possibility by Rosamund Stone Zander & Ben Zander:

A simple way to practice it’s all invented is to ask yourself this question:

What assumption am I making,
That I’m not aware I’m making,
That gives me what I see?

And when you have an answer to that question, ask yourself this one:

What might I now invent,
That I haven’t yet invented,
That would give me other choices?