I am still hoping to give you another perspective on this horse v human waste issue. I am going to make it short and soooo simple a Master in Engineering can understand it. Again, I am using public info from the Yosemite NP official site. Overnight stays in 2010: 142,864. Multiply this by 4lb of human waste per day per person and get 571,456lb of human waste in 2010 in the Yosemite backcountry. One horse/mule makes 50lb of waste per day. Now divide 571,456lb by 50lb and get 11,429.12 horses. This means it would take the waste of 11,429 horses to equal the waste from 142,864 humans. 11,429 horses in the backcountry of Yosemite in one year is an impossible ridiculous number just as some of your arguments. Please comment!
