Is Agile a Waterfall Upside-Down?

We often think Agile in terms of Waterfall, with smaller timeframes, but it might be something else here.

It happened to me again.

If you are following me, you probably will know that in addition to my consulting job, I am also a teacher in the university. This Tuesday afternoon, a did a talk in a local meetup about TDD:

It had been quite some time since the last time I had the opportunity to go to an event. The audience was wonderful, and we all got good time. Once it finished, we started to talk to each other. Then, I realized that I had two former students between the audience. I asked them about how was everything going. While we were talking, something hit me again.

They explained that my courses put everything that they learned upside down. My talk was about TDD —I have to confess that it was a way to trick people to learn TDD well— so we spoke about testing. They told me, that one year before my course, some other teacher taught them also about testing. But, while I taught…