This study addresses conceptual blending theory, originated by J. Fauconnier and M. Turner. The author raises some criticism of the theory’s underpinnings and methodology. Particularly, he points at the lack of cultural-historical analysis and the neglect of experimental data as the shortcomings of the theory as stated. It is shown in the paper that the view on blending as an important tool to adapt knowledge to the experience of average people is more correct than its interpretation as a basic instrument for the creation of new knowledge.