|quote=}}</ref> As an example he is pointing at the origin of life and of the genetic code and suggests that we may be faced with the possibility that the origin of life (like [[Singularity|the origin of physics]]) becomes an impenetrable barrier to science, and a residue to all attempts to reduce biology to chemistry and physics.<ref name="Incompleteness">{{cite book | |quote=}}</ref> As an example he is pointing at the origin of life and of the genetic code and suggests that we may be faced with the possibility that the origin of life (like [[Singularity|the origin of physics]]) becomes an impenetrable barrier to science, and a residue to all attempts to reduce biology to chemistry and physics.<ref name="Incompleteness">{{cite book |