You are managing a project and have identified a significant technical obstacle that requires expertise outside of your team's capabilities. You have a broad network of contacts, including a former colleague who specializes in this area but left your company on unfavorable terms. Which of the following is the most appropriate approach to address this impediment?
Reach out to your former colleague immediately and request their assistance
Carefully consider the potential risks and benefits of involving your former colleague, and consult with your manager or legal department before making a decision
Ignore the obstacle and focus on other aspects of the project
Attempt to solve the technical issue without seeking external expertise, even if it takes longer