I'm old enough to remember a Prime Minister telling a nurse that she couldn't get a pay rise because there's no such thing as a magic money tree.
Yet suddenly we can find billions for the pandemic, billions for the green revolution, billions for extra spending on the Armed Forces.
Don't get me wrong. We need to spend this money on this stuff - but how on Earth are we finding this money?
Are we just borrowing it and hoping we can pay it back later?
Or have we found the magic money tree?