Yes, it’s from a book called “Uncle John’s Bathroom Reader” and that book was resting on a closed toilet seat in a nation that only kind of uses the metric system in certain situations… however, you’d be surprised how much you can learn after a single visit to any local fast-food joint!
Hey! Didn’t you just violate your own rule of “0.2 lower resolution”?
You’re right about big numbers losing relevance in our minds, but I don’t think that’s even true for units of measurement. Since all units are arbitrary, they are inherently linked to a mental model with simple maths, quick conversions and rules of thumb. 450 ants is too large to visualize, but 450cm is simply the height where an old chestnut tree’s branches start. There are no 450 distinct centimeters involved in any of that, so you don’t have to keep them in your mind.
Compress down, guesstimate a piece of physical distance, continue with your day. Whether that mental model started as 15 foot or 450 centimeter isn’t really relevant, as long as you have developed a sense for the size of various things in your chosen units, and the units map nicely to other common units you might encounter. If you need any more precision, you take out your tools.
True, I converted metric to imperial with minimal rounding, as I didn’t want to give either an unfair advantage. You could round up again to 5-6.2 or down for 4.8-6.2 but my point stands. I think most people would prefer if the units they used most often were in the range of 0.2-10-ish. I don’t think that’s unreasonable.
You can memorise that a person is 10 billion nanoangstroms tall if you like, but surely you can’t be saying that it’s more convenient than using a scale that’s the same order of magnitude as the thing itself. That’s why we use the metric system after all, to give many units as close to the scale of what we’re trying to measure as possible in a standardised way.