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Questions tagged [existence]

Ontological and metaphysical questions about the study of existence, being and the structure of reality.

91 votes
22 answers
56k views

Could 'cogito ergo sum' possibly be false?

I've heard it postulated by some people that "we can't truly know anything". While that does seem to apply to the vast majority of things, I can't see how 'cogito ergo sum' can possibly be false. ...
Jez's user avatar
  • 2,039
35 votes
12 answers
2k views

How can one differentiate nonexistent entities?

How is it possible for things that do not exist to not be the same? How can one differentiate nonexistent entities? How can I know the difference between ghosts and werewolves if neither exist?
Niklas Rosencrantz's user avatar
30 votes
19 answers
9k views

Is Alzheimer’s disease evidence for the non-existence of the soul?

As Alzheimer's disease kills off neurons, a person's personality and cognitive abilities gradually fade away. Doesn't this suggest that the self or "soul" is simply an emergent property of ...
Mathematician prime's user avatar
29 votes
15 answers
19k views

Being alive today: the most improbable coincidence?

Think about it; modern humans have been around for at least a couple hundred thousand years. Yet, your mind, your soul, your very awareness, happens to be "alive" today. If time is a flow, moving ...
R_K's user avatar
  • 407
28 votes
12 answers
5k views

What arguments would support a secular pro-life position?

I've been thinking about the pro-life position (by "pro-life" I mean the position that abortion should be illegal. I.e. on par with murder) for awhile, and it is normally presented as a religious ...
yters's user avatar
  • 1,927
23 votes
14 answers
6k views

Is willful ignorance about one's own mortality escapism?

I don't mean if someone is dying of cancer and they refuse treatment or something -- I'm saying if a healthy person who is unhappy obsessing over his own inevitable death one day chooses to ignore ...
sangstar's user avatar
  • 987
23 votes
16 answers
47k views

Can something come out of nothing or not? Why?

In our current state of affairs it is safe and reasonable to assume something exists - be it a universe, pure conciousness, illusion or other designations. If some readers nevertheless claim something ...
Saul's user avatar
  • 458
18 votes
17 answers
19k views

If you place a pencil in an opaque box and close the box, does the pencil exist? [closed]

I’m trying to explain to my friends about things existing. I gave them this question: if you place a pencil in an opaque box and close the box, does the pencil exist? They say yes and I ask how do ...
Xavier Moody-Wusik's user avatar
17 votes
5 answers
8k views

What is the meaning of "meaning of life" and why do people seek it?

One of the oldest questions is "What is the meaning of life?". But what does the concept of "meaning of life" actually mean? What does it mean for something to be the "meaning ...
Danijel's user avatar
  • 307
15 votes
15 answers
2k views

Can we know that something exists even if we can't explain or define it?

Can a person know that something like "free will" must exist even though an exact definition in words, using language, cannot be provided, and in the absence of a complete theory that ...
user avatar
15 votes
14 answers
2k views

Why do things have a front and a back?

This question was asked by my three year old niece and I couldn't think of a good answer.
Ronan Cremin's user avatar
15 votes
8 answers
4k views

Can one prove a negative existential claim?

A major concern in epistemology is just what we can know about existential claims, that is, claims about the existence (or lack of) something. Suppose for example that I assert the following: The ...
commando's user avatar
  • 7,399
14 votes
7 answers
3k views

What does "everything" mean?

For starter, I'm not a student in philosophy, but mathematics. I only have a general knowledge in logic and set theory, all in the context of mathematics. My question comes from a doubt I got while ...
Alessandro Nanto's user avatar
14 votes
4 answers
2k views

Proving that man is not born with certain skills?

I was arguing with my father about the nature of the human mind. I believe that a man is not born with a predetermined skill, such as painter or composer, and that through hard work and dedication, a ...
bitmoe's user avatar
  • 241
13 votes
7 answers
4k views

Could it be possible that the universe doesn't exist?

Could it be possible that the universe doesn't exist? That nothing exists, not even you or me? And by not existing, I mean totally not existing, as in not even existing as a computer simulation, or a ...
just a lil kid's user avatar

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