The secret to a long-lasting relationship is perpetually imagining the worst. It's a world view tracing back to my Eastern European ancestry and one I draw upon regularly.
By means of tracing-paper I transfer my design to the wood and draw on that.
The art of economics consists in looking not merely at the immediate but at the longer effects of any act or policy it consists in tracing the consequences of that policy not merely for one group but for all groups.