That's what I mean, in that most if not all of these algorithms don't seem to be discovered novelly, but more that they are universally known now, and indeed it seems like the author typed them out and called it a day, literally. I'm saying that there is more pedagogical value in meditating and creating from scratch, algorithms for some purpose over the span of a month, rather than reading about known algorithms and typing them out. If these same algorithms were indeed realized from scratch by the author with no prior knowledge , then I commend them, but still, doing so in only a day each seems highly unlikely.