The point is that we, as human kind, are growing at an exponential rate and if every single human consume as much meat as people do in the west there is not eno

The point is that we, as human kind, are growing at an exponential rate and if every single human consume as much meat as people do in the west there is not enough land to grow all that meat. We can solve this in two way, or we stop eating meat or we start growing meat in a more sustainable way. The problem is not something to look in the future, but it is something really tangible, to have an idea of the order of magnitude I will post here a strip for xkcd[1] The "efficiency" of a cow is really low, it is estimate[2] that half of the energy you put into a cow is necessary just to keep it alive. [1] https://xkcd.com/1338/ https://xkcd.com/1338/ [2] http://www.angusjournal.com/ArticlePDF/1095_OptimumCow.pdf http://www.angusjournal.com/ArticlePDF/1095_OptimumCow.pdf