Nothing is currently holding the evolution of the human race back as much as a largely unseen constriction within human culture – namely the idea that human thought is extraneous to evolution.
But when thinking from within that constriction, any credible role for mind appears odd; modern culture with its belief in the value of science sees evolution as only a biological or genetic process. With mind being effectively banished from accepted theories of evolution, any notion that cultural ideas could hold back evolution has no intellectual framework.