(check out modern computing for why!)

Because when you need to do a process a thousand times, you program it in an actual computer. Then you just have a specific interface for just your process that makes everything simple.

And the developer really only needs to understand the process for a couple months. Once it's confirmed working correctly, you're generally done with that piece of code.

In defence of QWERTY, it did a decent job for what it was designed for (reducing the risk of mechanical typewriters jamming by not having two hammers next to each other be pressed at the same time), but really oughtn't have lasted past the point where the risk of jamming was not longer there.

Its to make sure that they don't get a billion questions about what button to push next and not being able to complete homework because of button confusion. Does it still need to exist today? Probably no but good luck getting rid of a standard adopted by all manufacturers of textbooks.

For one thing, just displaying the latest number isn't useful if you're doing anything complicated. For another, many calculations involve using the same number over again multiple times. Some calculators have a memory entry, but many don't. There's a "C/CE" but there isn't a backspace, so if you get one digit wrong, you have to start that entry over (and hope you chose the right option among C/CE/AC/CA/etc. If you accidentally hit the wrong operation key (multiply, divide, plus, minus) AFAIK there's no way to clear the operation. A lot of common math operations involves parenthesized expressions, but if you're using a basic calculator you have to instead enter things in an unnatural order. It's pretty common to end up in a situation where the calculator is displaying B and you want to do A/B but you can only easily do B/A. Fancy calculators have a 1/X button to fix this, but if not you're out of luck. Same with having B and wanting to do A-B but only being able to do B-A. You can fix that by multiplying by -1, but again, it's a UI issue that you can't just say "hold onto that number for a second because I want to enter another number and then use it".

If there is any nuance beyond a 4-function calculator with a single clear button, any nuance or deviation from any kind of standard will not be clearly explained.

There's never a backspace key, only two "clear" buttons that have nuance between them and little to no description as to which does what.

Calculators are similar to a Dark Souls game. You always restart from the beginning.

doesn't everyone know it stands for Celery Endives?

I thought it was "Clear Eggs". Always cleared my eggs... 🤷‍♂️

There sure is a lot of overlap with people criticizing the technical interface of a calculator and nerds, wonder why that is? Oh well glad I’m not one of those nerds, now back to the clear button being so obtuse.

edging the calcy

The "nuke it from orbit, it's the only way to be sure" approach.