I have heard Dr. Alkon and I will say that I believe he is more credible than most, even among respected scientists. However I can tell you from experience that there is always some spin that comes from companies, it is a matter of degree. I believe there is minimal coming from Dr. Alkon, but, the most I will give to company presenters is like 75%. I say this just to point out that no matter how credible he is there is a company agenda that puts everything together and he plays a key role. I just try to stay balanced.