The purpose of policy is to affect the real world. To do this, political realities must be fully taken into account. While imagination - and even a degree of daring - may be vital ingredients at the policy formulation stage, there is no point in proposing a policy which is bound to be rejected for political reasons. Policy proposals will not be accepted - and policies will not be effective - unless they have the support of prominent politicians and interest groups. Policy analysts must understand and take into account the concerns of politicians if viable policies are to be formulated. Politics and politicians are, in fact, central to policy issues and should not be viewed as irritating side-issues, to be ignored whenever possible.