A further point of criticism is that animal experiments are not carried out before clinical studies on people, but parallel to them. This causes the stated purpose of animal testing – namely to serve as preliminary testing for the safety of later tests on humans – to be refuted by the researchers themselves and carried out ad absurdum. Prof. Roberts and his team concluded that the results from animal testing are too inexact and could therefore endanger patients. In Prof. Robert’s opinion, animal testing is a waste of tax money due to grave shortcomings. Accordingly, he also criticized that despite the apparent weak points more money is still invested in so-called experimental basic research with animal experiments than in clinical studies that put the patients in the central point of the research. In conclusion, Dr. Roberts and his co-workers urged that all existing research findings from animal testing should be systematically examined before new experiments are carried out. Until now these warnings have not been taken seriously enough in professional circles.