Schellenberg's argument is unique in bringing developmental ideas into contact with human religion, which is often treated as exempt from their influence; also radical is the suggestion that much of religion's development has yet to occur and that religion can and should become a human project as monumental as science.

Schellenberg's argument is unique in bringing developmental ideas into contact with human religion, which is often treated as exempt from their influence; also radical is the suggestion that much of religion's development has yet to occur and that religion can and should become a human project as monumental as science.