It feels like I've just eaten a ripe fruit that has been fed very good nutrients. The core content of a good book and the instructor's experience are combined into one flow, and the theory and practice are easily explained, so I was able to gain a wide range of knowledge about CS as well as the test. As the theory explained above was put into practice, I was able to acquire it without realizing it as I took each lecture, rather than just understanding and memorizing it as text. I highly recommend this to anyone who knows the importance of testing as they gain experience, but wonders about 'how, how, and why'. In addition to testing, it is also easy to understand and explain essential knowledge that you need to know in the field, so I'm sure it will be very helpful to job seekers who want to become developers. Thank you so much for creating such a great lecture.