The reasons are complex, but basically the consultancy is paid to provide qualified
and impartial advice on all subjects of which the client has no specialist knowledge
or has limited expertise and manpower. An outside specialist can give a second
opinion on issues important to the client's future and throw a searchlight on to those
areas in which expertise may be lacking; it makes it unnecessary to recruit extra
staff (of perhaps unproven quality and ability) just for a special assignment; results,
which are not influenced by inter-departmental pressures, are available rapidly and
directly to the board of directors; consultants bring in fresh ideas, stimulate new
thinking and generally act as a catalyst".