Why can direct experiments sometimes be more useful than computer models?

In the context of the principles of physical science, direct experiments are often more useful than computer models because they provide a more efficient and cost-effective way to determine outcomes in specific circumstances. While computer simulations are powerful tools for studying systems that are unsafe or difficult to replicate in real life—such as nuclear blasts or long-term astronomical processes—they are not always the most practical approach for discovering what will happen in a given situation.123

Furthermore, computer modeling of complex systems, particularly those involving quantum mechanical behavior, becomes exponentially more difficult as the number of particles increases. In such cases, experimenters and theoreticians often work in tandem; experiments serve as a vital check on the validity of the approximations used in models, ensuring that the simplified calculations remain accurate. Ultimately, when a researcher is primarily concerned with empirical results, performing the experiment directly is frequently quicker and cheaper than attempting to model the process on a computer.14