Search results
Results from the WOW.Com Content Network
The existential quantifier ∃ is often used in logic to express existence.. Existence is the state of having being or reality in contrast to nonexistence and nonbeing.Existence is often contrasted with essence: the essence of an entity is its essential features or qualities, which can be understood even if one does not know whether the entity exists.
Reality is the sum or aggregate of all that is real or existent within the universe, as opposed to that which is only imaginary, nonexistent or nonactual. The term is also used to refer to the ontological status of things, indicating their existence. [1] In physical terms, reality is the totality of a system, known and unknown. [2]
McTaggart argued that the description of events as existing in absolute time is self-contradictory, because the events have to have properties about being in the past and in the future, which are incompatible with each other. McTaggart viewed this as a contradiction in the concept of time itself, and concluded that reality is non-temporal.
Another distinction exists between concrete objects existing in space and time, such as a tree, and abstract objects existing outside space and time, like the number 7. Systems of categories aim to provide a comprehensive inventory of reality by employing categories such as substance, property, relation, state of affairs, and event.
Rowe believes that this is analogous to the ontological argument's conception of God in the formulation of the greatest conceivable being: the greatest conceivable being is an omnipotent, omnipowerful, supremely perfect, existing being. Nothing in that definition explicitly demonstrates existence, it is simply added on as a necessary ...
At various other press conferences and events, Musk has also speculated that the likelihood of us living in a simulated reality or computer made by others is about 99.9%, and stated in a 2016 interview that he believed there was "a one in billion chance we're in base reality". [45] [47]
The Hilbert's Hotel thought experiment, as evidence of the metaphysical impossibility of actual infinites existing in reality. [58] Bertrand Russell's tale of Tristram Shandy, as evidence of the impossibility of forming an actual infinite by successive addition. [59] [60] Accordingly, he argues:
Philosophical realism—usually not treated as a position of its own but as a stance towards other subject matters— is the view that a certain kind of thing (ranging widely from abstract objects like numbers to moral statements to the physical world itself) has mind-independent existence, i.e. that it exists even in the absence of any mind perceiving it or that its existence is not just a ...