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Finally, a new video. I have a lot of hope for this video, because many people are unaware of this part of mathematics, and making it known is important. Now it's your turn to experiment with this way of modelling the world, so make the most of it. The next video is about the axioms of set theory, which you'll see is interesting. That will lead to the last video in the series, which is about the construction of natural numbers. Let's go for it. Well, let's see how the retention goes, I hope no one sees the end, which comes with a surprise ;)