I am a current FE developer. In my case, since I started development with JavaScript, it was somewhat difficult to build up CS knowledge. I tried studying data structures and algorithms in JavaScript, but it was not easy to think about the deep areas of memory due to the nature of the language. I took this course at a time when I had a terrible thirst for basic knowledge. While watching this course, I think I gained a lot of abstract realizations such as, "How do the codes I worked on work internally?" How variables that were simply declared are allocated to memory, what is the relationship between operators and CPUs and how they work, what role pointers play, what is the relationship between structures and objects, what is the reality of stack and heap that are casually mentioned in JavaScript, how callback patterns actually work, how to write good code, etc... I think I thought a lot while watching the course, consciously or unconsciously. I bought the course in mid-October and watched it little by little after work, and I finally finished it today. I feel proud that I have grown a little more than I did three months ago. I think this course will be of great help to those who are currently working and want basic CS knowledge. Finally, to the easy-going developer! Thank you for making such a great course!