I live in Los Angeles, which is the second most polluted city in the world, and I wake up in the morning to dirt all over my window.
If you're talking to an architect, he can look at a blank piece of paper, and once the initial design is there, the formula kicks in. Each room should have something unique and different about it - much the same way that in a song, every eight bars or so, a new piece of information should be introduced.
The cool thing about writing music, writing anything, is that once you publish it, it's there forever.
I think the true test of a pop song, for me, and I've talked to a lot of other writers about this, is you take your demo, you pop it in your car and you drive down Sunset Blvd. to Santa Monica, and that's the Hollywood car test.