Wheat to wheat is okay but salmon to plant offends nature. Scientists must be honest and patient communicators, not scorning or scoffing. Look case by case. There is legitimate concern that two or three multinationals will dominate in seeds. We need to widen the research base.
Edible vaccines are very long term.
Raw potatoes containing cholera virus may not be palatable for ages. When we look at animal and human gene science, inchoate fears increase hugely at the thought of human cloning. Even using embryonic stem cells to produce human organs is ages away. Positive eugenics remains in the realm of science fiction. I share the excitement from a long-term point of view but we should be careful to point out the length of the research and development and eventually the regulatory pathway.