It is my supposition that the Universe in not only queerer than we imagine, it is queerer than we can imagine - Geneticist and evolutionary biologist J.B.S Haldane
In this Minute Physics video, the universe, or what can be observed or perhaps described by mathematics, is differentiated from the Universe, which is helpfully defined as everything. Questions are addressed like is the future a part of the Universe? Is the math that describes the universe a part of the Universe, or does it live somewhere outside the whole? And, finally, what does the Universe think of the Harlem Shake?
In its brief life, the festival has hosted physicists like Brian Greene, Michio Kaku, Sean Carroll, Suketu Bhavsar, Leonard Mlodinow and Lisa Randall. All of them have contributed important answers to questions raised by festival goers, such as why does time have a direction when in principle it should go forward and backward? Linking it to entropy, or the process of moving from a highly ordered state to a disordered one, Carroll illustrated the point for the parents in the audience by noting that rooms do not, over a period of time, tidy themselves up.
None of the physicists appearing at the IdeaFestival have ever danced, though. We'll take it as proof that Universe, while fond of incredibly bright experimental and theoretical physicists, knows what it's doing.
Have a great weekend.