Wow! Lots of hostility about a recipe. For what it’s worth, I still plan on brewing the recipe as shown in this post.
Also, for what it’s worth, I asked Martin many months ago if he would be interested in simply removing the color background from just the Instructions section of his spreadsheet so a person could print, and read, the instructions while learning and working the spreadsheet. This would enable a nice clean printout without using tons of color ink. Well, he never replied and has since sent out two upgrades, none of which included the instructions suitable for printing. So, Point is, while I respect Martins work and his authority on the subject of Water, as a person interested in assisting fellow brewers, he leaves a great deal to be desired - at least in my eyes. I too found his comments to be condescending and rude.
Regardless of what your authority or level of expertise, you should always treat others with the same respect you wish to be treated yourself.
Sorry for the rant.