Problem: Walter said the below about rational and action centric design models: "It is much more accepting of the art concept where the medium shapes the final solution. So there tends to be a rejection of what some might suggest hard core engineering. This is engineering driven by rational principles, or a rational centric model. This is in contrast to an action centric model where an action is taken and then an observation is made. Action centric model is influenced by empiricism, where knowledge comes from sensory experience. Proponents of the action centric point to extremely high quality software as view as by users. All design starts at the concept stage. The artifacts in the form of documents, presentations, and models are all relatively easy to change. So all engineering engages in the action centric model early in the effort." What are your thoughts about rational and action centric design models topic?