W Celsius

Factually incorrect. That is true of metric units but not imperial. The inch is officially defined in terms of metric units.

Sometimes!

But yeah, no, chocolate bars are usually 50-60g. Which is also a thing, because they used to be 72g. I remember that number specifically because that's two of your "ounces", except on a second Tuesday during the ides of march when an ounce is like 85 grams. But only for red things. There's a whole separate system for blue things.

It isn't.

I have always wondered why electronic thermostats use 0.5°C increments and the answer seems to be Fahrenheit compatibility.

So, they're defined by universal constants but one step removed. The argument for universal constants is so pointless. The metric system is just as ugly if you use anything besides base 10, and its definition as by the universal constants is just as arbitrary. Yes metric tends to be better for many uses, but it's just as arbitrary as any other system.

Thanks for confirming they exist. I have never seen one that precise.

Huh.
The ones I've seen where usually 1cm³, which is pretty much exactly 1g.

F is just random and some people are used to it, and then try to assign meaning to the random points.
Why should the temperature of a horse have any relation with the weather?

Density of loose sugar is already between 0.7-1 grams / cm^3. Compressed sugar as in a cube weighs more, depending on the compression / packing factor. But 1cm^3 sugar cubes are rare, chances are you only think they are that big, while they are actually more near the standard cubes 16x16x12mm^3, which again triples the weight.

You kind of prove my point here: people typically fail to guess weights of a few grams.

Edit: corrected density, I had previously used the actual density, not the density of loose sugar, which is less.

It doesn’t, but it just at happens that those two arbitrary temperatures are very good lower and upper bounds for safe weather.

A pinch