Scientific theories must be consistent with evidence and observations. This means they have to explain what we see in the world, and they can't contradict established facts. However, "making sense" can be subjective.
Here's the thing about scientific theories:
* They don't need to be intuitive or obvious: Many scientific theories, like quantum mechanics, describe things that seem counterintuitive to our everyday experience. This doesn't mean they are wrong, it just means they challenge our assumptions.
* They evolve as our understanding grows: Theories are constantly being tested, refined, and even overturned as new evidence emerges. What makes sense today might not make sense tomorrow, if new evidence necessitates a different explanation.
* They are based on logic and evidence: While a theory might not feel "natural" to us, it has to be based on logical reasoning and evidence that can be independently verified.
Example: Einstein's theory of relativity might seem strange at first: time can slow down for objects moving at high speed, and gravity bends space-time. These ideas seem counterintuitive, but they are supported by overwhelming evidence, and have been shown to be incredibly accurate.
So, the answer is:
A scientific theory doesn't need to be "intuitive" or "make sense" based on everyday experience, but it must be consistent with observed evidence, be based on logic and reasoning, and be able to be tested and potentially revised. The more evidence a theory can explain, the more robust and likely it is to be considered a good theory.
