It's not rocket science
The phrase "It's not rocket science" is an idiomatic expression used to emphasize that something is not overly complex or difficult to understand. It originated from the perception that the field of rocket science, which encompasses aerospace engineering and space exploration, is highly intricate and requires advanced knowledge and expertise. By contrasting a task or concept with the complexity of rocket science, the phrase suggests that the matter at hand is comparatively simple and should not be intimidating.
In everyday language, "It's not rocket science" is often employed to reassure others or to downplay the difficulty of a situation. For instance, if someone is struggling to solve a problem, another person might say, "Relax, it's not rocket science; we'll figure it out." This expression serves as a reminder that the issue is manageable and does not require specialized expertise. It can also be used humorously to lighten the mood or to encourage someone who may be feeling overwhelmed. Overall, "It's not rocket science" is a widely recognized phrase that conveys the idea of simplicity and attainability in various contexts.