I bought the lecture because I wanted to organize math again while studying data science, but the instructor speaks very well and the flow is not interrupted and it goes right into my ears. Even though he speaks fast, his pronunciation is accurate and he doesn't necessarily have to speed up the playback speed, so I just put it on 1x and watch it. I wish there was a 0.75x playback speed for Inflearn. It's a really concise explanation. This lecture saves me time😆 And what's even better is that he explains the core theories in a standard way while mixing in easy examples here and there, so I thought the latter part was a bit difficult, but he explained difficult concepts so easily that I thought, "Hmm... I can do it?" They say that geniuses are not geniuses because they solve difficult things easily, but the instructor seems to be a real genius and I think he's done a lot of research. Thanks to him, I think I'll be able to build a solid basic base. The lecture title is also really perfect🍡