Undo was once a recovery tool. You made a mistake, noticed it, and stepped back. The action still happened; undo only softened the consequence.
Now undo sits closer to intention than to error. Knowing it exists changes whether something feels risky in the first place. You try more because retreat is guaranteed.
This shifts behavior quietly. Actions are taken with less internal debate, not because confidence increased, but because consequences feel provisional. The cost of being wrong drops.
Over time, experimentation replaces commitment. You click, type, send, not to decide, but to see what happens. Undo stands by as insurance.
This creates a subtle imbalance. The world still reacts as if actions are final, while the actor experiences them as reversible. Responsibility thins without anyone choosing it.
The takeaway is simple: when reversal is promised, courage and care begin to look the same.