How does an email seem to you in your mind? What method would you suggest using to send an email? Put all that you have learned into writing. Why are they so common, and what makes them stand out from other things? Where do the models begin, and where do they ultimately end up?

Explain in a few sentences what a technique is, and then continue to describe its three fundamental components.

How do you envision e-mail? How exactly does a message sent through email go from one location to another? Create a list of all the things you have found. In what ways are they distinct, and why were those distinctions established? Assume that the levels of complexity present in the various models vary greatly (or abstraction).

When and how did it start to become what it is today?