The leaner you are, the easier it is to change
The more massive an object, the more energy is required to change its direction. It’s as true in the business world as it is in the physical world. When it comes to web technology, change must be easy and cheap. If you can’t change on the fly, you’ll lose ground to someone who can. That’s why you need to shoot for less mass.
Less Mass: Getting Real: Less Mass
More sage advice from the people at 37signals.