The pressure toward enactment is investigated in terms of the threats that primitive, pre-thinking states of mind exert on attempts to know and understand. Clinical material and a review of the literature suggest that when the analyst confronts (by thinking) rather than complies (by action) with the hidden demands of omnipotence, he or she triggers and is then subject to the pre-thinking mental realm of concrete sensory bombardment, which can penetrate and obliterate his or her separately thinking mind. One important pressure driving the analyst toward enactment derives from a defensive response aimed at avoiding the threat of such concrete projections.