2 papers
cs.SE2026
The Invisible Throttle: Running on Borrowed Time in Scratch
Xinyue Feng, Hanyuan Shi, Yuan Si
Scratch has 135 million registered users, most of them children, and 164 million shared projects. What they are taught about the speed of a script fits in one sentence: a loop iter…
cs.SE2026
The Invisible Scheduler: Dragging a Sprite Can Change What a Scratch Program Does
Xinyue Feng, Hanyuan Shi, Yuan Si
Tens of millions of children program in Scratch, whose programs are concurrent: when the green flag is clicked, every sprite's scripts start together and share the project's state.…