From Wikipedia :
The term subconscious is used in many different contexts and has no single or
precise definition. This greatly limits its significance as a meaning-bearing concept, and
in consequence the word tends to be avoided in academic and scientific settings
In everyday speech and popular writing, however, the term is very commonly encountered.
There it will be employed to refer to a supposed 'layer' or 'level' of mentation (or/and
peception) located in some sense 'beneath' conscious awareness -- though, again, the
notion's dependence upon informal 'folk-psychological' models that remain vague means that
the precise nature and properties of this 'underlying' layer are either never made
explicit or possess an ad hoc quality. At different times, references to the
'subconscious' as an agency may credit it with various abilities and powers that exceed
those possessed by consciousness: the 'subconscious' may apparently remember, perceive and
determine things beyond the reach or control of the conscious mind. The idea of
the 'subconscious' as a powerful or potent agency has allowed the term to become prominent
in the New Age and self-help literatures, in which investigating or controlling its
supposed knowledge or power is seen as advantageous. The 'subconscious' may also be
supposed to contain (thanks to the influence of the psychoanalytic tradition) any number
of primitive or otherwise disavowed instincts, urges, desires and thoughts.
My own definition :
The subconscious is the part of your personality and mental power that is controlled from
remote by aliens.
Intuition is only a tiny part of this subconsciousness.
And hearing voices (or multiple personalities) is a special case in which your
subconsciousness guests can't keep their mouth shut and therefore becomes a part of your
As you know from wikipedia, the subconsciousness has far greater power than
And now you know the reason.
Some of these subconsciousness guests are perverted evil creatures.
Zapping your mind with sadism or sexual perversion or evil advice.
Or pushing you to consume drugs and bad food, or even committing suicide.