Module 5 - Interface efficiency, KLM, GOMS

In this module, the most interesting concept for me was Efficiency. Probably because KLM and GOMS were too technical and a bit overly complex, I was able to understand this concept more than the others and therefore take more out of it. The examples in Aza Raskin's blog such as the gas one made me realize how simple it is to calculate Efficiency, and I could then understand how does it relate to HCI and how much theory can help an interface designer to take the best out of his work.

Module 4 - The Human Processor Model, Fitts’ Law

I was never a good phyisics student, so it took me a while to understand the concepts. But once I did, I finally understood why we are studying it and why is it useful for HCI. I appreciated this link. By practically trying it out, it was possible to understand Fitt's Law and what exactly means in a hands-on sense.