Clinical trials are necessary in order to further advance the final product. As Professor Simon stated in his lecture, you can’t assume that because something works in a mouse or rabbit, it will work the same way in a human. This is why clinical trials are needed. Also, these trials are never done without the consent of the patient. Thus, they should be fully aware of any risks and/or complications that may arise. If consent is not given, the trials cannot be conducted on that patient. The people that participate in these trials are given enough information that will allow them to make the decision of whether or not they want to participate. Obviously, the disadvantages of doing clinical trials are that there is no guarantee that it will work as was intended. Otherwise, there are a lot of things that are gained from doing clinical trials and the more trials, the better.