What's happening?

You can see a pencil in front of you. You look away. The pencil is still there, right?

Or is it? Scientists say that particles - the tiny pieces of matter that make up everything - can actually be in more than one place at a time. It is only when we look at them that they "choose" one place.

This is called quantum theory. This means we could say there is no reality until we can see an object, because it has not "chosen" where it will place itself yet.

It gets even weirder. Scientists have long talked about what happens to all of the other possible outcomes we do not see, and some have suggested that they do actually happen - in endless parallel universesThe idea of separate universes or worlds that exist alongside our world..

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Imagine your best friend observes a particle's location in a lab. You wait behind the door. Until they tell you where it is, their reality is "decided", whereas yours is not. Briefly, you are separated by reality itself.

Yes! The idea that reality does not exist until someone sees it is just that - an idea. We know that what we see is the one truth.

No! Reality does not exist outside of what we can see with our eyes!