And as long as you keep track of which of your 5 different cups is the one that’s 16 times larger than the tablespoon measuring scoop. :)

-10F is cold, +80F is hot.

0C is “maybe it’s time to think about switching from summer shoes to winter shoes; there’s better grip on my winter shoes and that’s getting relevant today”

Which of the cups?

The one that’s in my cabinet? The one that Wikipedia lists as “this is definitely the cup, there’s no doubt about that”? The cup that’s also called a “coffee cup” as opposed to the cup from which I drink my coffee, which is very different despite also being both a cup and a coffee cup? The volume that my coffee maker defines to be a cup (or maybe that’s supposed to be a cup, sorry, coffee cup, but not the same coffee cup that the standard coffee cup - which still is named a cup)?

-50C is real cold - about as cold as regular humans will ever be exposed to, and survive, anywhere (outside of Antarctica). +50C is real hot - about as hot as regular humans will ever be exposed to (and survive).

Nice and symmetric.

Of course there’s a little bit of flexibility in these descriptions. I believe both Baghdad and Yarkutsk have surpassed their respective “50”-lines without killing their complete populations.