As Tolkien said, "I've been suspicious of allegory ever since I was old enough to recognise it".
So literature, as you say, is all about interpretation. This, apart from being subjective, is also a product of society's norms at any given point in time. Some subjects just aren't about interpretation. What's the capital of Peru? Any debate?
What amuses me the most is that scientists constantly question things (great, so do I). But they're human, so will often say or hint that their current understanding is the correct one. After all, until only a generation ago, virtually all biologists accepted evolution as a constant linear process and all cosmologists accepted the steady state theory.
I often wonder when the next paradigm shift will be, and people who accepted dark matter and energy as a fact are laughed at!😆