Suggestions

I had heard that there were people who had never seen Star Wars, but I didn't want to believe it!  ;) Thank you for your feedback; I'll modify the examples to be more universally relatable (though I will miss hasLightsaber(x)).

Yes you did a great job in presenting the central ideas, despite lacking a principal author. My only tiny bit of request is to elaborate on the variable section a little. Just adding one example as with the others you have provided should suffice. Specifically just point out here what could be variables of an exemplary system.

On a larger perspective I feel that we might need to have a principal author responsible for this page because of its importance. It lays foundations for many pages and topics discussed in class. So it will be good to have a nice write up for this. Thanks again for the effort