And as Francis Crick pointed out, nine years after discovering DNA with Mr. Watson, that life itself has to have growth as a precondition -- it has to have free energy, sunlight and it needs to be an open system of chemicals.
E, come fece notare Francis Crick, nove anni dopo aver scoperto il DNA insieme a Mr. Watson: la vita stessa non può prescindere dalla crescita; deve avere energia libera, luce solare, e dev'essere un sistema chimico aperto.