The book is devoted to the issues of parasitism and excess profits. A sudden encounter with a snake in an ordinary person will cause shock, fear or aggression. Does the zoologist have completely different feelings for them? down to tenderness. The author had similar feelings when studying thinking parasites. An ordinary person has hatred for them, fueled by fiction. As a result? "senseless and merciless rebellion" as a consequence of the shortsightedness and greed of the super-rich, as well as the actions or inaction of the state. The author, as a zoopsychologist, made an attempt to explore not only harm, but also to find benefits from thinking parasites. The main conclusion obtained as a result of the study is that what is needed is not a struggle to destroy parasites, but labor aimed, firstly, at creating a system in which they will have little space, and secondly, at creating a morality uncomfortable for them, and thirdly, at destroying a caste-like society that is unfair in principle. A sense of humor will tell the reader what not to take too seriously.