Theories are important because they provide a framework for understanding how the world works and how people interact with it.
Theory is always a work in progress. Theories need to be tested against evidence from the real world and modified accordingly. This process of testing, refining and modifying keeps theories alive.
Theories can be very simple or very complex, but they all have one thing in common: they try to explain why things happen the way they do. They often use jargon that may not mean much to someone who hasn’t studied the theory before, but once you understand them – it makes sense!
Theories also influence current practice by providing a way to test and refine new ideas. For example, if someone wants to develop a new drug treatment for cancer, they might start by identifying existing theories related to cancer treatments and then using those theories as a starting point for developing their own ideas about how best to treat cancer patients (e.g., targeting specific genes).
An example of how theories influence current practice would be how Darwin’s theory of evolution has influenced medicine and psychology today in treating disease and treating mental disorders like depression through drugs instead of through therapy because doctors believed that since humans evolved from apes then we should not treat them like other humans but animals instead because we are all animals at heart so therefore we should treat them like animals not humans.