Nonetheless, Thomas and Chess had effectively nixed the idea that babies are born 'blank slates' who passively receive and are moulded by the environment.
Second, some of them nixed the tadpole stage of life, so that fully-developed adults hatched from eggs, which cut down on the need for a body of water to grow up in.
Nathan says if he gives his idea to his immediate supervisor, " she'll either take it over or nix it." " To nix" (nix) means to reject, to cancel, to say no to something.