- The screen layout is basically poor readability: There is a lot of free space at the top, but most of the content is concentrated at the very bottom of the screen. - Too many typos: It feels like the result of an English translator was used without editing. - The content shown on the screen and the explanation do not match, and it is not explained in order, so I cannot tell where the explanation is being made. - Final review: I think the instructor prepared it too carelessly. Honestly, I have taken more than 10 lectures on Inflearn, but this is the first time I have said this much. Still, I am leaving a detailed review in the hope that it will be helpful to others.