When I teach people about becoming a supervisor, I always tell them that they should not do formal evaluations of their staff. I am often met with surprise and concern. Some people believe that evaluations are so necessary that they believe they are required by law.
We all know someone who believes that they know everything. You know the type, you mention that you are starting on a new hobby and even though they have never done the hobby, they tell you how to do it. I had an employee like this once.
We are all exposed to unethical behavior all of the time. We constantly have to make decisions as to what we are going to do. Should we go along, refuse to take part, expose the behavior, or maybe sue someone?
The interesting part of working in the hazardous waste field is the need to solve mysteries. Often, the environmental scientist arrives on a site years after the people who put the waste on the site have left.