People say two heads are better than one - and assume therefore that the more heads applied to solving a problem, the better.
Get some kind of breaking-up-a problem-expert to break up a problem into its constituent parts, dish them out to lots of specialists, get someone who is some kind of recombining-expert to put together all these individual solutions...
Doesn't work, does it? - unless you already know how to solve the problem and you are merely executing a solution (a solution come-up-with by one head).
One good head is better than any number of less-good heads - except for a few very rare (and typically unstable) partnerships.