We can come up with a scientific theory that is not based on observation. Most theories aren’t based on observation. Observation comes after. ‘I bet I can jump that fence’ comes before observing it.
It’s more of a cycle of observation leading to theory leading to more observation and so on. “I bet I can jump that fence” comes before observing whether you actually can, but it comes after observing the fence and your jumping abilities. You wouldn’t decide you can jump that fence without first observing it.
It’s more of a cycle of observation leading to theory leading to more observation and so on. “I bet I can jump that fence” comes before observing whether you actually can, but it comes after observing the fence and your jumping abilities. You wouldn’t decide you can jump that fence without first observing it.