How funny, Mukiryoku Neet na Moto Shindou, Boukensha ni naru copied this scene near identically. Oh sure there are some differences, but the sequence of events portrayed in this test are the same.
So basically the "I'm not worried about the guy learning 1,000 different punches, I'm worried about the guy who learned the same punch 1,000 times" kind of quote, but with magic spells. I can dig this.