The author Michael Pollan wrote some passages describing how pigs have manipulated humans into a symbiotic relationship whereby the pig population has been able to explode beyond its natural boundaries through the help and support of mankind in exchange for food. Much like a plant giving carbon to fungi or bacteria when it needs something if I can be allowed the parallel. If I really think about GMO, my first concern would be my position in nature as a food source. There are so many fungi and bacteria that we cannot resist, and the numbers are vast.