My mom’s a mathematician, she got annoyed when I said that the order of operations is just arbitrary rules made up by people a couple thousand years ago

I'm not surprised. Here's the proof of the order of operations rules. Also, the equals sign wasn't invented until the 16th century, so only 500 years old at most (the earliest references to order of operations are over 400 years ago).

As far as you can tell. Really. Like it’s an oblique implication

Indeed there was an oblique implication in me saying "as far as I can tell", but you seemed to miss it (I was wording it in a polite way, rather than being downright rude like a lot of people in here seem to have no trouble with at all, but water off a duck's back...).

your original point was off-topic

The OP was about an e-calculator giving the wrong answer, so I don't see how explaining why it's doing that is off-topic (in your view).

Good day

Bye now.

why that’s actually ambiguous.

It isn't actually ambiguous. You have remembered what you were taught in school, unlike the author of the blog post, who manages to write the whole thing without ever once checking a Maths textbook (which would reveal the only correct answer to be 1).

Unfortunately, demonstrably, a lot of people don't know what to do.

Division doesn't mean fraction. Division is 2 terms, a fraction is 1 term. Terms are separated by operators and joined by grouping symbols. If you change the division to a fraction you change the number of terms and change the answer (and you also would've just done division before brackets, which violates the order of operations rules).

There's only 1 set of rules, and 2 sets of people - those who follow the rules and those who don't.

It's not taught 2 different ways. It's taught the same around the world (the mnemonics are different but the rules are the same), there's just 2 types of people - those who remember the rules and those who don't. You'll notice students never get these questions wrong, only adults who've forgotten the rules.

you’re a slow reader

I see you like to use made-up "facts", just like the blog does. Is that the best you can come up with after repeatedly insisting I should read it? (which yes, would've been a huge waste of time, exactly as I said, had I not turned it into a positive use of time by writing a fact check about it. Alleged fake news turns out to be... fake - who would've thought? Oh that's right, me :-) )

I’ll read your comment when you read the article

So, did you read it now? Or are you a "slow reader" and I need to wait longer for your responses?

I've narrowed this down to using NavigationPage.SetTitleView and have created issue 21037, which has an 806issue branch in the repro repo.

The ÷ sign isn’t used by “Americans”, it’s used by small children

I don't know where you're from, but it's used universally in Australia - textbooks, calculators, all ages - and from what I've seen the U.K. too.

written like this (÷) means it’s a fraction?

No, that means it's a division. i.e. a÷b. To indicate it's a fraction it would need to be written as (a÷b). i.e. make it a single term. Terms are separated by operators and joined by grouping symbols (such as brackets or fraction bars).

put the whole 2(1+2) down there, there’s no reason for that.

There is - it's a single bracketed term, subject to The Distributive Law. i.e. the B in BEDMAS.

why do you think most business are already writing a separate Android app

I don't think that. I know some businesses who are still writing separate apps, instead of switching to cross-platform. You'll have to ask them why they're doing that. It frustrates me no end when platform-specific bugs come up because they're running different code on each platform, each written by different people.

the fact that people interact by touch rather than with a mouse and keyboard

...makes no difference at all. Whether a user has touched a button, clicked on it, or tabbed to it and pressed enter, the same Button.Clicked event gets triggered.