Critics have complained that evolutionary theory is scientifically vacuous because it is incapable of refutation. If true, Darwin’s idea would be less of a theory and more of a blind faith. However, Darwin himself was clear about what could falsify the theory. ‘If it could be demonstrated that any complex organ existed, which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down’. So far, no alternative theory has provided the required demonstration to meet Darwin’s challenge.
