QuickTidal;186904 said:
It's like when Roger Ebert said he didn't like the second Mummy film because he didn't think they could outrun the rising of the sun like they did....and I emailed him and asked why he was arguing for plausibility in a movie where they've raised a mummy from the dead...
Well, if you've made a fictional universe with its own set of rules, you should stick to them, otherwise you're cheating your audience. Sort of like how, if Jules Verne had done his figures, he could have made the Nautilius ten feet longer and achieve neutral buoyancy, instead of making up antigravity engines in an act of laziness. The 'invisible book', the research that's gone into a good novel explaining the wacky shit that's happened, is one of my favourite parts of a scifi book.
Having said all that, it's much less important in a fantasy novel, and even less so in a film as long as it's not a plot point, or just really, really stupid.