[lnanek2]

I can't, but at least the article did add a paragraph claiming designers can: " Does it matter? Quite often, shadows are incredibly sensitive to opacity changes, and many shadows use values from around 5% to 20%. That means there’s only 15 or so steps in the usable range, and single step jumps can be quite noticeable. This is not the most pressing issue in the design tools we use, but it is a real problem. "

[marcedwards]

There can also be cumulative rounding issues if you’d stacking lots of layers on top of each other. It’s a subtle issue, but a strange one. There’s no deep technical reason for it — the inputs are just losing data.