It's not everything that ctrl z(undo) works for, sometimes when the deed is done it can't be reverted, so think wisely before you make decisions that will make you wish for time machine, and the last time I checked, it hasn't been invented yet. 
It's not everything that ctrl z(undo) works for, sometimes when the deed is done it can't be reverted, so think wisely before you make decisions that will make you wish for time machine, and the last time I checked, it hasn't been invented yet.