Leaders are problem solvers by talent and temperament, and by choice. For them, the new information environment-undermining old means of control, opening up old closets of secrecy, reducing the relevance of ownership, early arrival, and location-should seem less a litany of problems than an agenda for action. Reaching for a way to describe the entrepreneurial energy of his fabled editor Harold Ross, James Thurber said" 'He was always leaning forward, pushing something invisible ahead of him.' That's the appropriate posture for a knowledge executive.