Originally Posted by Abomination:
“A major gripe with Series 5-7 is that we're expected to either be intelligent or amazed when the likes of the Doctor's jacket in Flesh and Stone proved to be a significant plot point, but then more glaringly obvious details are shown to be production errors. You can allow for so many, as they're after all human are these people behind the show... but if we're to have to focus with such scrutiny at one plot point, it's insulting to the viewers not to make that the case elsewhere (with the leaf, or Rory's badge for example).”
You're not
required to notice it. If you do, that's a bonus, but as long as you recognise the scene, or the background character, or the prop, when they revisit it, you can still be struck with the relevance of it. It's perfectly fine, and expected, to not notice the Doctor's re-appearing jacket, or Rory's badge (which was blink-and-you'll-miss-it-anyway). Speculation is fine, as long as you know that it might be nothing, and you accept that production errors occur and not everything is significant.