Science simplicity is a great video on Ted.com on the way we should be thinking and designing new technology, because if we design it very simply, we can then apply it in many different ways easily. He calls this ability “stackable”. Like how accessing a webpage works on many different levels (http protocol on the TCP/IP protocol through a physical medium, etc, etc, etc).  Simplicity on simplicity creating complexity as a whole, yet leaving it easy to fix if something goes wrong because we can pin point problems through the simplicity!  This creates reliable technology.