Your life, like everything in the world around you, is a system. By learning how your life systems work, you can manipulate the systems to achieve your desired results. This process is called systems thinking, i.e. systematic.
Let's draw a picture of ordinary employees who start their work at nine in the morning. They sleepily enter the kitchen and make their coffee, then they arrive and sit at their desk, then spends 30 minutes or so scrolling through Facebook or YouTube or reading the news until they are ready to "go to work."
A criminal detection is complex and multifaceted, and detectives must continually make critical decisions about issues of life and death, based on little information in an environment of dynamic events that are still changing.