Ritual is a way to "create a perfect space" for the purpose in hand. Ritual is akin to a re-creation of initiation ; one must 'withdraw' into that 'special place' where one may "see clearly". And the notion of the "desert" is important too ; the structure of the ritual first creates the "desert" before filling it with the chosen ingredients.
And of course, the notion that "as above, so below" is paramount : it is within oneself that one creates the ritual, the rest is for greater focus ; ideally , one could perform a ritual entirely in the inner consciousness, with no exterior manifestation whatsoever.
With ritual there may seem to be a limited sense of immediate objectiveness … but in truth ritual will often create a long lasting sequence of repercussion. Knock on effects … each part subtle on its own … but added together into the sequence the effect of ritual is quite clear and beyond the realms of coincidence.