Rapidly changing organization

1.In a rapidly changing organization, are decisions more likely to be made using the rational or political model of organization? Why? 

2.A financial analyst at Merrill Lynch tried for several months to expose the risks of investments in subprime mortgages, but he couldn’t get anyone to pay attention to his claims. How would you evaluate this employee’s power? What might he have done to increase his power and call notice to the impending problems at the firm?