In the third edition of The Encyclopedia of Science Fiction, author and critic John Clute writes of Inter Ice Age 4: "It is a complex story set in a near-future Japan threatened by the melting polar ice caps. The protagonist, Professor Katsumi, has been in charge of developing a computer/information system capable of predicting human behavior. Fatally for him, this system predicts his compulsive refusal to go along with his associates and his government in the creation of genetically engineered children, adapted for life in the rising seas. Most of the novel, narrated by Katsumi, deals with a philosophical confrontation between his deeply alienated refusal of the future and the computer's knowing representations of that refusal and the alternatives to it. The resulting psychodramas include a mysterious murder and the enlistment of his unborn child into the ranks of the mutated water-breathers."
