As bugs or human/dog biological systems find ways to mutate and mitigate the effects of current products, new ones must always be developed. Drug-resistent flesheating bugs, vaccines that lose effectiveness when the disease mutates. And there are other problems with existing bio products: I take an eye medication that works wonders for what it was designed for but causes increased eye pressure, putting my very sight at risk, whereas a newer product treats the condition and does not cause increased intraocular pressure. Same story across the board with bio products. R&D needed desperately in so many areas.
__________________  Jeanie and Tibbe One must do the best one can. You may get some marks for a very imperfect answer: you will certainly get none for leaving the question alone. C. S. Lewis |