The biggest constant in our world today is change. We aren't the same as we were yesterday and we'll be different again tomorrow.
The world is ever-changing. Technology is different. Education has changed. Each generation brings with them a new set of principles and values.
Even leadership is different.
Coaches can't just coach the way they were coached. They can't just teach leadership the way they were taught. Coaches today have a whole new generation of athletes who don't relate to leadership in the same way.