The philosophical thought exercise used by men and women, waiting for a text that states "If you turn your phone off the text is both received and not received untill you turn it back on and see". This thought exercise is exceptionally useful when you are waiting and obsessing over a text.
Person 1 "hey aren't you waiting on a text? Why is your phone off"
Person 2 "schrödinger's text. If I have my phone off I don't know if that hot girl in chem class replied to my dinner invite and as a result I can't worry about not getting a reply."
Person 1 " wow just grow a pair"