I have a question about Range and SimpleQuantity. Is there ever a case when you would like to report a valueRange with Quantity instead of SimpleQuantity? Is there a reason why valueRange has SimpleQuantity instead of Quantity?
The difference between Quantity and SimpleQuantity is that the latter constrains out ‘comparator’. Comparator allows you to say things like “< 1.0 ug/L” or “> 1000 ug/L” - things that are commonly needed when performing lab measurements with devices/methods that have minimum or maximum detection ranges.
Those sorts of statements make no sense when you’re dealing with a range where your values are already establishing limits, and so we prohibit comparator on the lower and upper bound of Range.