Biology is the economics of science compared to what you're comparing it to. Car engines, radios, phones, etc, either work or they don't. If one Dr. Michael Yeadon, former Vice President and Chief Scientist of Pfizer says don't take the Covid "vaccines," that they are going to be killing in large numbers within three years, you should listen to the one Dr. Yeadon over thousands of "experts" and "public health" types.