This is correct. Not just without refresh, but without throwing away the DOM—we'll just re-run React's algorithm. This gives huge productivity boost when devel

This is correct. Not just without refresh, but without throwing away the DOM—we'll just re-run React's algorithm. This gives huge productivity boost when developing complex nested UIs because you can quickly tweak CSS/JSX without blowing away all the state (like modal windows, tabs, loaded data, etc).