Comment by m0d0nne11

Firstly, the article is appreciated - thanks. Now a minor gripe: several links I've clicked for further info point at paywalled matter, even for straightforward explanatory stuff like "moldboard plows" and, yes - I can go find info about such plows elsewhere but it breaks the stride when all that's needed is a sentence or two for clarification, not somebody's curated PhD thesis... ;->