---

I have borrowed the title from the 1935 paper in which Schrödinger introduced his cat example. I will explain why present-day critics still, like Schrödinger, see problems with the orthodox Copenhagen interpretation of quantum mechanics, and what the alternatives are. I will also discuss whether these alternatives are compatible with relativity. Furthermore, there are provable results about such alternatives, and I will describe some from recent years, including some of my own.

---

Roderich Tumulka, Tübingen
Seminar Room 0.03, ETP
Contact: David Gross