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From his earliest works, [[Lacan]] criticizes those who attempt to understand human behavior purely in terms of [[instinct]]s, arguing that this is to suppose a harmonious relation between man and the world, which does not in fact exist.<ref>{{Ec}} p. 88</ref> The concept of [[instinct]] supposes some kind of direct innate [[knowledge]] of the [[object]] which is of an almost moral character.<ref>{{Ec}} p. 851</ref>  Against such ideas, [[Lacan]] insists that there is something inadequate about [[human]] [[biology]], a feature which he indicates in the phrases "vital insufficiency" (''insuffisance vitale'').<ref>{{Ec}} p.90</ref> and "congenital insufficiency". This inadequacy, evident in the [[helplessness]] of the [[human]] [[infant|baby]], is compensated for by means of [[complexes]]. The fact that [[human]] [[psychology]] is dominated by [[complex]]es (which are determined entirely by cultural and social factors) rather than by [[instinct]]s, means that any explanation of human behavior that does not take social factors into account is useless.