Well, it’s hard to explain, but it goes a little like this.
There was this guy who woke up one day and invented the computer. It was so easy, and the day still long, so he invented the Internet, with all of its sites. After that, he contemplated the beauty of it.
There was so much of it, and it was full of money, and it was a pity to leave it there, and so he came up with an unprecedented idea, something called a music player, whatever that is.
The music player felt unloved, so he created the touchscreen, so that people could fondle their players. Then, it put a radio in it, and then another, and then some more thingies, and then suddenly a lot of people were out of a job.
On the plus side, now everybody wanted to keep a perfectly functional piece of spyware in their pockets.
So, yeah, at some point between one thing and another, he also came up with a line, like ‘less is more more’, and then it turned into an ism-ism.
Lessism or something like that.
but seriously line length is an art and a science, which is why the pages of most books are taller than they are wider, whereas computer monitors tend to like it the other way. Except those meant for typesetting. And mine, which can pivot to portrait for when I’m writing my novel no, I’m not actually writing a novel.