Biodiversity is a dynamic process which has been collapsing at a remarkably high speed for the last thirty years. How can 80% of the insect biomass in protected areas of Europe vanish in such a short period of time? In the meantime, honeybee colonies are collapsing. In each case, the usual answer is that the causes are multifactorial and that more research is needed. A statement that easily satisfies the scientific community. The aim of this paper is to show that, in fact, this consensus results from the manipulation of the scientific management system by social engineers working for the agrochemical industry. Such techniques have been in use since 1953 when they served to hide the major effects of tobacco concerning lung cancer. Indeed, lung cancer, like biodiversity collapse, is multifactorial. But one cause is more important than all others. By insisting on the multifactorial aspect and by manipulating the research system, this fact remains hidden. This process has been documented by journalists and sociologists but remains largely ignored by the community of biologists who are immerged in it and thus largely ignore it.