Twitter did start to restore some sense to timelines by letting you disable its "best tweets first" option, but it's buried in the settings. What if you just wanted to flick it on and off? You might just get that chance. Twitter is testing a toggle right in the title bar that switches you between the latest tweets and top tweets with a couple of taps. You could quickly view the highlights if you think there's a tweet you missed, and revert to the chronological order to view posts the way they were meant to be seen.