I don't approve this transition to paid courses. The free videos on this channel have helped me a lot as student in school and university which is why I decided to support the channel on Patreon. I have been particularly excited for the Mathematica course which started as a free course on youtube. I wondered why the development stalled and I guessed that you finish the course first and then upload it. Now I see that you made a paid course out of it. I'm sure you have your good reasons for that but I don't like it. Especially for this kind of educational content its great when it is openly available and free so that everyone can learn and grow. That's why I supported Socratica in the first place. I will therefore cancel my Patreon subscription. I will still be a member on KZfaq to support your other projects.