If you aren't sure why state tearing was a hot topic a few years ago, when React's concurrent mode was first discussed, this github discussion should help: <a href="https://github.com/reactwg/react-18/discussions/69">https://github.com/reactwg/react-18/discussions/69</a>.<p>Tanner Linsley had a great post on twitter that suggested that concurrent rendering was fundamentally at odds with fine-grained reactivity, so to better understand what he was talking about I decided to write this demo.