[dkkarthik]

I find this line of discussion dubious. What you want to know is _not_ if he has spent hours preparing but if what he is saying is correct/the best way to explain something. He might be so gifted that everything just comes to him. Or he might be the person that might suck at math even with hours of preparation. Just because he said "I dont prepare for my lessons" (paraphrased) does not mean what he's teaching is no good. There is a reason why the videos have been watched as many times as they have.

The thing that annoys me about Karim's argument is 1. There is no constructive criticism. He does not tell Sal (or me the reader) how one can make SA better 2. He has a competing for-profit venture that is a direct conflict of interest with SA and leads me to question his motives 3. He is a self-proclaimed expert with no proof of his own expertise 4. From his rant, I don't get that there is something structurally wrong with SA videos in general as his claims make them out to be