Neat clone of empire attack (now defunct, https://www.ianandrew.com/empire-attack).
Used to play the 10 day variants there which were great fun, although more defense focused I think.
I guess? After they get my email verification code I get a physical usb/nfc request - no idea what it's for/does.
A "email login" would have been less of a blocker.
If the label contains sugar, it was added and not inclusive of other whole ingredients. You can buy canned apples (ingredients :apples) and canned apples (ingredients :water, sugar, apples). Guess which costs more.
How about using something like NaN instead of 0? To not have a small set of calculations being all 0 and missing from a larger end result (which would go to NaN instead).
On a tangent here, but "not just 3d printing a plastic part" got me thinking.
Scientists, instead of requesting time on Hubble, ask time for the 3DBuilderAndExperimenter, give it a blueprint and inputs/outputs, it runs, returns any results, and is recycled.