S$.$K$.$ Inc. is a small, growing aviation company, the CEO makes the hiring decisions based on his years of experience as well as his gut feeling. He started the business $10$ years ago with $10$ employees, and the company has grown to over $30$ employees. The CEO has asked you, the HRM$,$ to explain some of the differences between the use of his practice$-$based selection approach and an empirical$-$based process and to explain what challenges you anticipate he would face in using validation techniques.