An existence is claimed only after observation.
Contrary to all philosophical claims and dictionary definitions, Existence is state of presence in an observation.
The mind changes the concept by applying “existence” to the object, forgetting that the “existence” derived from (and actually is) awareness about presence.
Awareness is needed in order to make the existence valid.
We work with “existence” more like a meaning (concept), but after it was created by the conscious mind, the mind deceivingly is applying it to the object.
Actually, it is the other way round – the existence is applicable to the mind.
We wouldn’t talk about existence if we never observed it.
If we only have self_awareness without any other knowledge, existence is impossible as a concept (meaning, knowledge).
Because any existence is observed through our five senses we can say that all things are already known to us through the concepts created through observation.
Details in 50/50 (Part One) throughout Part Two, Part Three, Point of Exit and Clarification for dummies as well as the first comment in this topic