Requirements and specification acquisition are intertwined processes of conflict management. Within an individual, or within a group, conflicting requirements must he reconciled and specified. We propose three freedoms to aid requirements and specification acquisition: freedom of preference, freedom of conflict, and freedom of compromise. These freedoms imply the need for multi-agent requirements, multi-agent specifications, and re­quirements negotiation. We have incorporated these freedoms and their implications into our model of requirements engineering. Requirements are negotiated in the context of combining multiple specifications. This process is aided by integrative reasoning, our computer counterpart to a type of negotiation behavior. By providing the analyst with computer­ aided-negotiation methods, we directly support the intertwined processes of requirements and specification acquisition.