[pylua]

The other drawback to buying expensive consulting services is that your company does not have the domain knowledge of the solution.

[HeyLaughingBoy]

That's not necessarily a drawback. That's the reason people hire plumbers instead of learning plumbing: they have more important things to focus on.

[Brian_K_White]

But plumbers don't hire other plumbers.

[rascul]

That's not necessarily true. Plumbers sometimes own plumbing businesses that employ other plumbers.