The world says that man evolved from monkeys. However, there are many consequences of such thinking. The first and foremost consequence is that it takes away the meaning of life. With such thinking, man has no purpose. Man has no reason.
Man is nothing more than a freak accident of nature.
Such thinking leads to depression and hopelessness. A second consequence of evolution is that it gives credibility to no law. If humanity is a freak accident of nature, then life has no value. The logical end of such thinking is to extinguish the weak of humanity so the strong of humanity can be even stronger. Thus, with such thinking, if you are strong, there would be nothing wrong with killing the weak.