b. environmental protection agency only covers part of the universe of chemicals when it comes to safety when it comes to food some particular the food and drug administration through its own regulation has a lot of oversight over the chemicals in particular that get into the food supply and ultimately into humans and for that regulation we still have almost a nine hundred fifty s. if not earlier style of regulation work chemicals are only presumed to have effects at high levels of exposure and we actually trust the industry to vouch for chemical safety now i do want to ask you about the f.d.a. position a little bit later but before we go there let me pose a question that i assume some businessman may pose to you you know these kind of ecological or epigenetic studies may take years if not decades to accomplish and if we wait until everything is safe prove business will go out of business how would you respond to that this is not an anti business message this is a message for innovation in products and opportunities for profit actually and margin through innovation we've seen time and ag