Right. I am sure a produce person can look at a single picture and guess the density, calculate the shape and determine an accurate weight without using a scale or having two reference points with exact measurements to at least be able to figure out volume. Do you by chance run a unicorn ranch or have a rainbow farm?
I can tell from the one next to your box of salt that it's not near 7#. I've been making kraut for over 20 years so I know a thing or two about it. The last batch I made was with 4n heads that size and they were all right at 1 1/2 pounds each. JMHO Oh like I said I have that same bucket as a reference point also.
I don't get why you are so hung up on this but you have yet to offer how it is that you can estimate the density of the cabbage from a picture I posted. Maybe there is something in the water of NV that we don't have here in NC that gives you this super power? You also don't know how close the cabbage is to the bucket or the salt box. I am sure in your head the reasoning is sound and you think I am lying to everyone. Although, for the life of me I can't figure out what I would have to gain in claiming a 7lbs cabbage over a 1 1/2lbs cabbage. I did weigh each of the 3 cabbages before slicing them up so I could use the appropriate amount of salt when layering and punching them down. And while I can't say I will lose sleep tonight over you questioning what my scale said, I will say you are on the most pointless quest I have ever seen on an internet forum. I hope you get whatever fulfillment out of it that you need to continue on with life.