Internal vs. External- why is it either or?

Bev Scott and Jane Hascall have a short little write up on Google docs, “Inside or Outside: Internal or External Consultants” that has a great chart comparing the strengths of each. To sum up: The external is good for high level, broad transformational strategy, coaching executives, can add expertise, can bring in comparisons, can validate stretch ideas etc.. The internal is good for speaking the...