The point is to emphasize again, what you lose and don't lose on each method (the data that wasn't taken care of by checkpoint and Lazy writer are lost, so the h*** guy doesn't think it is a full recovery), so those people won't be confused before they attempt a solution. The article is good. It is nice people takes time to write an article explaining to people who don't understand. Myself, I am not a kindergarden teacher. Like the college professors, I write, the reader does not understand. It is not my problem. If editor does not understand, I publish to another site.

Jonathan spent time and effort, wrote a nice tutorial article. He did not need to defend himself. The editor who reviewed article should pick up the tab and explain to those who don't understand how it works.