Actually, a lot of people have trouble just single-clicking, so double-clicking is even more of a challenge.
A lot of people just can't get the knack for clicking twice in quick succession. And the inconsistency between when they should single-click and when they should double-click causes a lot of confusion.
I think it probably would make life easier to get rid of the double-click.
I set up all the requisite things, and since it was his first time, we went through a few common desktop workflows tailored to his needs. There I noticed: he was single-clicking where he needed to double-click—e.g. while opening a directory. I briefly explained the differences between the two and we tried again. He got better, but still struggled. I biked back home wondering if he'll continue to struggle with the double-click. :-(
My professor's use cases are quite simple: writing articles in Libre Office (he's already familiar with it on Winblows), YouTube, and a browser—only one tab at a time; he was blissfully unaware of the concept of tabs until we walked through it!
Thanks for the idea.
There's a lot of anecdotes about how uneasy/annoyed/bothered it can make you feel when watching someone unfamiliar with a scroll wheel instead mouse over and slowly click+drag the scrollbar, but the big one for me is seeing someone double-click on a hyperlink...
I also see people use the arrow buttons on the scrollbar. But they just click the button repeatedly instead of holding it down. Which means that for a very long page, it can take them a long time and hundreds of clicks to get to the section of the page they want to see.
(Jobs also stuck us with the invisible fragile clipboard in place of the Star copy/move pattern.)
It makes sense to me.
People (professionals with a lot of experience) would open orders or product sheets twice (two new tabs) and it created issues. So now, you can't double click.
Once you click something, it is disabled for a few seconds.
I still hear double clicks, but now it doesn't create any bugs.
As a kid in the 90s, I just took double clicking as a necessary evil. But after many many opportunities of trying (mostly successfully) to teach it to both the elderly and to kids, I've gradually grown to hate it. It's such a horrible gesture, difficult to perform, complicated to reason about and entirely disconnected from any real-world metaphor.
May double clicking die off and vanish, never to be found again, except for in the annals of bad ideas.