Have complex human-made things been designed?

All that matters to me is that "if there was no human involvement, then there would be no windows XP".It's a nice way of looking at it, an interesting way, that might perhaps alleviate the concerns of a Theistic evolutionist, if they are to believe in an active God making new species, (new programs).But logically, ultimately, you do not get anything at all without the intelligence-factor.