This is a very good graphical demonstration (especially the merged cells), thank you. It is also a variation "2b" from Kent's list (just for reference). I thi

This is a very good graphical demonstration (especially the merged cells), thank you. It is also a variation "2b" from Kent's list (just for reference). I think that the textual demonstration of the same effect could be found in https://www.cargocultcode.com/normalization-is-not-a-process/ https://www.cargocultcode.com/normalization-is-not-a-process... ("So where did it begin?" section). I rediscovered this blog post after I published the article.