We all used scientific methods to resolve daily issues that are based on analytical thinking. If you want to resolve a complex problem, break it to smaller pieces to gain simplicity, resolve the simple parts, and then you can resolve the complex issue. It wasn’t a long time ago when we (as humans) discovered non-deterministic sciences (such as quantum physics, chaos theory and complexity) and found different tools and concepts to deal with complexity.
When you face a complex issue, don’t simplify it! Use tools such as system thinking to understand the complexity and fix the problem. Every time you face a system (parts that interact to reach one purpose), you are facing a complex problem. Before resolving an issue, stop and think which type of thinking is a fit to address what you are facing. Use first synthesis and analysis just if there is no issue with the system.