Does scepticism of external world and sceptical on inner world of same level?

Like someone doubting external world doesn't exists, it is illusion or process or emergence by inner world, only inner world of mind and thoughts etc exists. And someone who doubting inner world of mind and thoughts etc like it doesn't exists, it is illusion or process or emergence by external world, only external world (or physical world) exists.

For example,


Or scepticism about God's existence related to but distinct from external (physical) world.

Are both of scepticism has similar level of doubts, or of problem?

To clarify more,

Inner world of thoughts and feelings means, what we experience and feel from first person perspective. And sceptical of it, means being sceptical to claim that we are feeling something or we are really conscious or there is mental or first person feelings or experience.

Is there any special difference or both are same types of scepticism?

  • 1
    scepticism about God's existence and scepticism about the existence of external world are totally unrelated Nov 20 '20 at 12:44
  • 1
    "Same level" of what? Psychological anxiety?
    – Conifold
    Nov 20 '20 at 13:00
  • 1
    Sure, there are different types of skepticism. But it is unclear according to what parameter you are proposing to compare them. What sort of answer about "levels" are you expecting?
    – Conifold
    Nov 20 '20 at 15:25
  • 1
    I do not claim the objection is inescapable, but which entity would be subject to this illusion in case mental reality would be illusory? I always wonder how mental reductionism does not at least try to answer this objection. For , of course from a third person point of view, I can try to reduce the others' mental states to physical states, but can I make such an attempt for my own mental states? Nov 21 '20 at 17:55
  • 1
    Your wording could be clearer. "sceptical on inner world" solipsism? Philosophical zombies? You are asking about huge sprawling topics, and then for a pretty arbitrary evaluatiin of 'same level'. What would that even mean? You might like this discussion philosophy.stackexchange.com/questions/48769/…
    – CriglCragl
    Nov 22 '20 at 21:59

James Conant has argued that skepticism about other minds and skepticism about the external world are of the same form - Cartesian. It's a lucid argument, and I think gets to what you're asking about. In case you can't access it the article is titled "Two Varieties of Skepticism."


Not the answer you're looking for? Browse other questions tagged or ask your own question.