I don't add oil or rinse. I do use plenty of water and heat it to a rolling boil before adding pasta. I stir it once, right after I dump in the pasta, and then I try not to stir it again unless it is really clumping.
For you to be here now, trillions of drifting atoms had somehow to assemble in an intricate and intriguingly obliging manner to create you. It's an arrangement so specialized and particular that it has never been tried before and will only exist this once.
--Bill Bryson, "A Short History of Nearly Everything"