Sorry, but it doesn't clear things up at all.
I thought I'd hammered home what my concerns were, and they had absolutely nothing at all to do with the techniques used in the films. It's just that beyond a certain point, if the disparity in size between two objects is too great, it's difficult, if not impossible, to indicate how big or small one of them is by using nothing but the other one as a comparison. The disparity between sandworm and person is too great for a successful one-step comparison; the disparities between a person and a shuttle craft, and between a shuttle craft and a space station, are not too great, giving us a useful two-step comparison between us and the space station.
To make this point clearer, I'll use an absurd comparison: one cannot indicate just how big (or small) a planet is** by comparing it to a person. Similarly, one can't show how small or big a bacterium is*** by comparing it to a person.
** - Compared (naturally) to other planets.
** - Compared (naturally) to other bacteria.
I thought I'd hammered home what my concerns were, and they had absolutely nothing at all to do with the techniques used in the films. It's just that beyond a certain point, if the disparity in size between two objects is too great, it's difficult, if not impossible, to indicate how big or small one of them is by using nothing but the other one as a comparison. The disparity between sandworm and person is too great for a successful one-step comparison; the disparities between a person and a shuttle craft, and between a shuttle craft and a space station, are not too great, giving us a useful two-step comparison between us and the space station.
To make this point clearer, I'll use an absurd comparison: one cannot indicate just how big (or small) a planet is** by comparing it to a person. Similarly, one can't show how small or big a bacterium is*** by comparing it to a person.
** - Compared (naturally) to other planets.
** - Compared (naturally) to other bacteria.