Yes indeed, Inception for me was a very powerful movie too. It is a brilliant metaphor of how life exists through multiple dimensions and how we are influenced through them whether we know it or not.

I especially liked the metaphor of how our reality starts to break because of subconscious programming - like the lead characters continual confrontation with his supposedly dead wife (we're always kept guessing about that one - perfectly set up for the sequel!).

And I thought the ending was brilliant - the totem that doesn't fall over! So you're not quite sure if this is reality or the dream still.

For me the totem is a powerful metaphor for day to day life and it relates to your question yulia...

"But somehow it is important many times that the info comes from 'outside', i.e. I create something/somebody outside to tell me what I already know, but can't see and say to myself. Question I have about it: why this mechanism? I mean why do we build external help?"

I'd say this is an authentic aspect of your soul - first the Ray 6, looking into the outer world to reflections of our own beingness and to align with that. That the Ray 3 - the translation aspect - making sure that what we're really experiencing is real. Its the continual questioning of motivation for action and I'd say it is very beneficial and powerful for us. Then there's the Ray 7, creating synchronistic magic so that we know we're aligned with the co-creative flow

Together, to me, these things represent our 'totem' - how we know what's really real.