I made two different types of gravy over the weekend. One for the carnivors, the other for the vegetarians - 1) Chicken stock, wine, and juices from the roast 2) Vegetable stock and cornflower.
They went on the table, got mixed up and nobody noticed the difference. It's a bit like software applications - we (I) tend to over complicate things when simplicity would do -- guess that's true of life too!