Comment by cadamsdotcom

Consider UX:

Click the link and contemplate while X loads. First, the black background. Next it spends a while and you're ready to celebrate! Nope, it was loading the loading spinner. Then the pieces of the page start to appear. A few more seconds pass while the page is redrawn with the right fonts; only then can you actually scroll the page.

Having had some time to question your sanity for clicking, you're grateful to finally see what you came to see. So you dwell 10x as long, staring at a loaded page and contemplating the tweet. You dwell longer to scroll and look at the replies.

How long were you willing to wait for data you REALLY care about? 10-30 seconds; if it's important enough you'll wait even longer.

Software is as fast as it needs to be to be useful to humans. Computer speed doesn't matter.

If the computer goes too fast it may even be suspected of trickery.