I love this philosophy. I first realized this while writing essays. I used to stare at the "Keyhole Method" diagram and conjure an intro, examples and a conclusion. They always sucked but the diagram made it seem so easy. When I started writing on my own for fun I would just launch right into the examples and find a pattern as I went. It almost always turned out that the last paragraph I wrote, the moment of clarity that tied it all together, would become the introduction.