OP's point is that there are multiple definitions of simple. The rotary has one use case, the iPhone many. A rotary phone is a simple telephone, so it's an exa

OP's point is that there are multiple definitions of simple. The rotary has one use case, the iPhone many. A rotary phone is a simple telephone, so it's an example of Economical Design. The iPhone is not a "simple telephone", so it's an example of Elegant Design.