If you take a Boeing 747 as an example, it would be quite natural to assume that something more complex that the 747 must exist on top of it. Darwin however, stated that complexity comes from the bottom up and at no point we would need to assume that it requires a more complex intelligence above it…
… (Brian Eno inserted a description how he apparently was the first person to actually pee into Duchamp’s famous readymade Fountain at the MOMA. Quoting his book A Year With Swollen Appendices: “I positioned myself before the display case, concentrating intensely on its contents. There was a guard standing behind be and 12 feet away. I opened my fly and slipped out the tube, feeding it carefully through the slot in the glass. It was a perfect fit and slid in quite easily until its end was poised above the famous john. I released my thumb and a small but distinct trickle of my urine splashed on the work of art.”)