Not only that, but most of HN, even the professional programmers who've been here for a decade, have absolutely no clue about anything regarding the physical world. Chemical equilibriums, enthalpy of formation, basic irradiance calculations etc. That's perfectly fine, as long as you don't make really bold statements about things you don't understand. This thread reminds me of reddit. A ton of highly upvoted comments that are completely wrong. You don't need to live in the countryside to understand the basic economics surrounding agriculture, and no, "artificial" fertilizers aren't a scam nor a big corp trick. If you think you can replace them with fungi, good luck.