Sal still makes lots of videos! Lately he's been making a World War I series:
https://www.khanacademy.org/humanities/history/euro-hist
We just like to put up good content from other authors too when we find it. :)
https://www.khanacademy.org/humanities/history/euro-hist
We just like to put up good content from other authors too when we find it. :)
Perhaps Sal doesn't have a great understanding of cryptography? He doesn't do a single cryptography video on khanacademy as far as I know.