Hi Mr Allen. Firstly, thanks for the comments. They are valuable to me. I took them as lessons from a professional who has over 25 years of experience. To be honest, I already know the text doesn't contain the architectural content. Nowadays, adding the prefix "modern" seems to make the content will be attractive. Actually, while I was writing, I had feared to put that title because of the point you criticized me. However, as you mentioned I behaved like a vendor that makes makeup for exaggerating the content. Also, this criticism really slapped me awake. I decided to stop writing and publishing these things. In the coming days, I will be more reading than writing. I really spend huge effort writing on Medium and creating content on Youtube. I will be sparing that effort to read. Also, I have changed the title to "Introduction to Modern Data Analytics Tools".

Regards.