@Azuza - Quotes are actually quite important, in the right context. The article talks about web pages, but I ran into a problem at work when doing desktop software development.
I built a scripting engine that basically parsed human readable scripts for some of the program’s advanced routines. There’s nothing wrong with that per se, but the scripts used quotes.
Well, when I was modifying the parser, I accidentally had it filter out quotes that were based on a certain font. For example, I was writing using Times New Roman and used quotes with that font.
The problem is that the computer was expecting a standard ASCII quote, and to make a long story short, it messed up the routine.
It took me a long time to figure it out. Basically it wanted the standard Courier (teletype style) quote. So while these details can be picayune at times, they can make a big difference in software development.