It infuriates me because it’s disrespectful. The message insinuates that I wouldn’t be able to figure it out.

Needed to add my phone number for 2FA on a website. Something went wrong :( checked network tab and the error being returned from the API was too short phone number, they'd made an assumption based on the country they were from.

I still had to message their support to let them know, but... They could've made it easier to find out the reason at least.

Hahaha! Were so fucking quirky! How did you get here? Uh-oh, that wasn't supposed to happen! ThIs iS nOt ThE PaGe YoU'rE lOoKiNg fOr! Hahaha! Like in The Star Wars, which is a nerd movie! HAHAHAHA! Oh noes too mani kittens 😺😸😹😺😸😹😺😸😹!

A spinning circle requires just two threads, one to do the work and one to spin the circle. And they don't have to talk to each other.

A progress bar is the same thing, but now the work thread has to periodically communicate the progress to the bar thread, and inter-thread synchronization has to be setup. And how do you know how much progress a single file transfer represents? Or how many progress points is a registry edit versus a file transfer? It's hard to figure out in advance, which is why so many progress bars are shitty estimates of progress.