I can't speak for Windows, but almost every app on Mac has undo. Undo and redo had widespread adoption by the 1990s. iPhone implemented shake to undo back with

I can't speak for Windows, but almost every app on Mac has undo. Undo and redo had widespread adoption by the 1990s. iPhone implemented shake to undo back with iPhone 3.0 https://en.wikipedia.org/wiki/Undo https://en.wikipedia.org/wiki/Undo http://osxdaily.com/2009/08/21/undo-button-iphone-shaking-motions/ http://osxdaily.com/2009/08/21/undo-button-iphone-shaking-mo...