[CharlesW]

Better: Allow undo/history even if it's unserious.

[erik14th]

Is there any reason that concept is so rarely used in the web? Well, there's usually an undo functionality in desktop-like web apps but most CRUD lack that kind of feature.

[danellis]

Because people don't know they want it, so it's easy to not bother implementing it knowing no one will ask for it.