Since its Prelinger Archives release, the film has provoked much controversy. Ken Smith, author of Mental Hygiene: Classroom Films 1945 - 1970, believes the film is fake. He mentions, among other things, that the decapitated dog scene shown in the film could have been produced with simple special effects. Smith cites only his reaction to the film as evidence. Others are skeptical of J. B. S. Haldane's ties to the Communist party, they propose that the film was produced as Soviet propaganda.