Real life (often abbreviated to RL), or the real world, is the reality we perceive when we are awake, as opposed to the reality that is projected in our dreams. There are many differences between the real world and the dream world, which can be used when finding dream signs or performing reality checks. It is important to remember that what you may perceive to be the real world may in fact be a dream; even you, reading this page, could in fact be dreaming. You may even be recollecting reading this page from your subconscious.
There are those who have created theories about the reality we live in, and whether it is truly real. Many have contemplated them as only fancies of the mind, but there are those who believe in them, which can often lead to mental disorders such as schizophrenia.
A common theory put forward by those in the lucid dreaming community is that the reality we live in is in fact just one long dream, and that another 'true' reality lies beneath it. Another theory is that we are living in a computer simulation, built by a more advanced race of humans, an alien race, or an artifical intelligence as featured in The Matrix trilogy.