Comment by maxbond

I can't speak for OP, they may have been advocating for giving up farming animals (or fowl) altogether, but personally I see a huge inflection point between traditional and factory farming methods with regards to the level of risk. When you are compromising the immunity of your livestock, you beg trouble.

I understand the temptation to zoom out to a several hundred year timespan, that can be clarifying. But when (as in this case) there are substantive differences in recent history, it muddies the waters. I totally buy that endemic diseases are largely zoonotic diseases plus time. But that doesn't clarify how much risk exists in our current methods of farming. Factory farming is not equivalent to traditional farming in this respect. History is not featureless and when we flatten it we lose important details.