2 ms·
The main difficulty is that it is unethical and illegal to test on humans to any degree of significance for treatments that have important ramifications. The mo
by BenoitEssiambre 12y ago
The main difficulty is that it is unethical and illegal to test on humans to any degree of significance for treatments that have important ramifications. The moment results start leaning one way, researchers are obligated to move all the patients to the beneficial or non dangerous side. You are not allowed to let humans get sick or die in order to keep a clean control group.