Speaking of how the guy starts out on one side of the scrollbar and “walks” to the other, a decade ago I programmed a “scroller” js tool (behavior) that I could add to any element. It basically made it so that when I pressed a trigger with my finger, a menu would appear under it, and then I could move the finger without lifting it until I reached the item I want and release. The memu would scroll under my finger, so that if I reached the bottom (minus a margin) it would already be scrolled all the way to the bottom. Same kind of math as the guy here.<p>I was tired of having to tap, then scroll, then tap again, on phones. Yes, I really made sure that mode worked too, but the “hidden mode” was to get the selection done in one swipe! Just like I could always do on a Mac, in one mouse swipe!<p>For mouse interaction - you didn’t even need to press, move and release. You’d hover over the trigger element and then move your mouse down, then click. In that case the menu would disppear if you moved the pointer out of it.<p>You don’t have to imagine, just try the Developer menu on <a href="https://Qbix.com" rel="nofollow">https://Qbix.com</a> for instance (the menu isn’t long enough but try turning your phone horizontally to make vertical space more limited.. or the tech savvy among you can use Safari debugger to copypaste some more menu items into that menu).<p>By the way, I now have dozens or hundreds of such “tools” I use to create interfaces. Menus. Dialogs. Tooltips. Onboarding Hints. Speech. Tabs. Chatrooms. Live videoconferencing. Peer to peer broadcast that’s uncensorable. Ok that escalated fast :) <a href="https://intercoin.app" rel="nofollow">https://intercoin.app</a> as an example.