[red-iron-pine]

there are strategy consultants who give opinions. usually backed by numbers, aka death by powerpoint / excel.

often times they exist to "read your watch to tell you what time it is" and bill you 800/hr for the privilege. but they often act as a lever to move implacable executives, or to serve as a sanity check for C-levels / the board before launching big initiatives.

other consultants write code, and are essentially high-end contractors. part of the value proposition is that they're very qualified -- hence why they cost so much -- and that they have a large org to lean on. the large org means that if the individual contractor dies or quits there is another who can jump in, and they can rope in other resources as needed.