Not only that, but always writing on the edge where an individual operates is also much more time-consuming. So, from an author's perspective, it is also much e

Not only that, but always writing on the edge where an individual operates is also much more time-consuming. So, from an author's perspective, it is also much easier and less time-consuming for him/her to write at a much lower level. I know that writing on the absolute edge of your learning helps in solidifying your learning. But maybe I just don't want to always write on my edge level. As an author who is writing for mainly pleasure, maybe sometimes I just want easier tasks. I think it is totally okay to not always write on one's edge and write some quick and easy content. On top of that- implementing an ODE solver using RK4, BDF, implicit Euler is not that hard. For an experienced dev with the right mathematical maturity it is easy. It can be done in a few hours. But maybe I simply like to talk about DEs for someone who is getting a refresher or is beginning. That is justification enough for my choice of this topic and this level.