why blogging ?

参考链接： https://www.dataquest.io/blog/how-to-setup-a-data-science-blog/

Blogging can be a fantastic way to demonstrate your skills, learn topics in more depth, and build an audience. Besides, blogging can help their authors land jobs or make important connections. Blogging is one of the most important things that any aspiring programmer or data scientist should be doing on a regular basis.