I think the comment about the number one chord was thinking that the 1, 3, 5, and 7 above the columns was referring to chords for some reason, rather than scale tones which is what I and most others assumed (correctly) is what it was. The 7 should be b7 as pointed out by at least one post.

My wife asked if I had seen the dog bowl. I told her I didn't even know he could.