You lost me at the annoying trail on mouse movement.

You advocate for good UI and immediately make some crap that makes it hard to read/use your site. It's kind of ironic.

Please stop messing with: selection, mouse cursor, copy/paste, etc.

The words "trail on mouse" instantly reminded me of the Windows mouse trails, that's what I was expecting going into the article.

But honestly, I really liked whatever you call this type of trail. Not sure this was the intent, but I used the trail to trace under the lines as I reading them which helped me pay attention to the text a bit better.

100% agree with you on messing with selection and copy/paste though.

Lost me even before I realized what was going on. My computer is too slow to handle the tricks they are pulling. I think you are right, but their "cool" things were too slow and made a mess of my screen without having any relation to what I am doing now (because I did it seconds ago)

You think this blog post is advocating for good UI?

They work on real-time computer use input. One of the areas in this space, mouse movement, is sophisticated enough there are people with PhDs working on the problem of human-like mouse movement, which requires you to record time-series (trailing) data of physical mouse movement based on human hand, wrist, and arm movement and replicating position, acceleration, and velocity data.

It's also just a mouse trail, get over it. It's not an interesting comment.