Why a person is not able to concretize something with accuracy ...

Why a person is not able to concretize something with accuracy ...
I noticed that everything that a person determines, he does it like that very vaguely. There is no specifics. A lot is present in our life based on personal, which in fact does not make any sense, because it is personal and nobody knows. And if we do not know how to believe this. It's so listen and forget, just for the pleasure of the timbre of the voice ...
All concepts from human life are not exact and we hardly find a common language using them everyday in our life. How so. Why is it impossible to define exactly how, for example, the civil code ... Why should we refer to something that does not exist, the essence of man, as something special and alive ... And that the living does not exist and operates by the rules. Everything in this world is governed by rules, and in no way by chance. Randomness is present, but only in order and combinations of rules. Probably this is perceived by a person, as a very special thing that makes him and all living things different, from non-living nature.
I do not see anything special or distinctive in the existence of the living. Yes, live, like any machine can perform certain actions, if we have a source of energy. But like any machine these actions will not be permanent, until the mechanism is worn out.
And all these mysterious and emotional sighs about living and non-living nature is the invention of a person, from not knowing the essence of the matter ...