A third factor to consider is the skills gap that you want to fill or bridge. What kind of knowledge, skills, or competencies do you need to achieve your desired outcomes? Do you have them internally or do you need to source them externally? Internal consultants may have relevant skills that are transferable, adaptable, or complementary to your project or problem, but they may also have gaps, biases, or conflicts of interest. External consultants may have specialized skills that are rare, valuable, or cutting-edge for your project or problem, but they may also have challenges, risks, or drawbacks in terms of integration, communication, or sustainability. Depending on your skills gap, you may want to select the option that best matches your requirements and resources.