As students we lose hours to a feed. Not deliberately, and not once. You open a phone to check something and look up forty minutes later with nothing to show for it.

The same phone has half-finished courses on it. We have started plenty. A Python course. Statistics. A language neither of us can still speak. Every one of them either teaches nothing, or asks for two hours of undivided attention in a single video.

Neither of those survives a real day. And our attention is not built that way any more, whether or not we wish it were.

So we stopped asking people to change how they use their phones. The scroll is not the enemy. It is the one habit everybody already has, and the only thing wrong with it is that nothing at the end of it is worth keeping.

Cosynced puts learning inside it. A teacher's existing material, the slides and the notes and the deck from last term, becomes cards short enough to fit a gap and interactive enough to stay with you. You scroll the way you already do, and this time you finish something.