Which is to say that is a lot more complex than “just look” and also more complex than “come up with a predictive theory”. And unfinished—there are still.unresolved interpretational issues with our best theories. It is still true that no-one has method for obtaining correspondence-to -reality, realism, beyond instrumentalism, that works in all cases.
Indeed, the scientific history of how observation and experiment led to a correct understanding of the phenomenon of rainbows is long and fascinating.
Which is to say that is a lot more complex than “just look” and also more complex than “come up with a predictive theory”. And unfinished—there are still.unresolved interpretational issues with our best theories. It is still true that no-one has method for obtaining correspondence-to -reality, realism, beyond instrumentalism, that works in all cases.