Why is it important to have Professional Development?
Any field of study will change over time. It is important to remain relevant in your field with ongoing continuing education courses. If you plan to get to a level you have never been before...you must be willing to do things you have never done before. Always invest in yourself with professional and personal development.
What is the best way to create a tight contact mesial-distally in a restoration?
The restoration of the most longevity would be full crown coverage --- which would not only give a great broad contact but will also protect the natural tooth. Second best would be a gold or zirconia inlay/onlay. Unfortunately, a direct composite or amalgam will wear over time.
What is the proper way to hire an employee?
Ask open-ended questions. Create a unique situation and ask how he/she would respond.