Which Universe Are We In Again?
![Image](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg8y3Ih_Ou0DlMkN0C9C8r42BUlK0OoBe1O9ih4axTPCLNGWIUkv12iEf1XKyTnIAe7SfytuNGdVC3V3k0-ly__PoPYIqFiqLQKyzjzwJ50QWqmF6BvJMCWMxZjxF-rXI3uG5hX-lNvWwU6IKxbUgtuEeAmW2vTLIlv7UyVe0hRRvRo2uYB1Rx09Q/w640-h482/Double-slit_experiment_with_electrons.png)
When considering the many worlds of the multiverse the picture that probably springs to mind, born of a thousand popular physics documentaries, YouTube videos or books, is of the universes like a sheaf of A4 paper or the pages of a book, all stacked neatly on top of one another, running in parallel, minding their own business until the science communicator sticks a sharp pencil through the stack for some reason. It's not that though. Another common mental model is of a constant bifurcation and splitting so that whenever a decision is made a new universe is created (which seems a bit of a waste if the decision is just about which pair of socks you're going to wear that day). It's not quite that either though. The multiverse is much more like a dark smoke-filled room, a continuum of possibility, probability and particles that simultaneous contains all conceivable universes and sock choices. What you decide doesn't create a universe, it just moves you into that part of the