Through use and abuse of hidden postulates, of bold, often ill-founded extrapolations, a pseudoscience has been created. It is taking root in the very heart of biology and is leading astray many biochemists and biologists, who sincerely believe that the accuracy of fundamental concepts has been demonstrated, which is not the case. Wishing to point out this type of misconception, we quote P. T. Mora, an American biochemist, who writes about polysaccharides contained in the cell membrane:.