Thank you for your answers. We’re in accord about not everything thought of being necessarily true. This, then, includes the thoughts of an evil daemon (bogeyman?) messing around with you.
What makes realism more plausible than an evil daemon? One element to this is as follows: Conviction in realism is how I and a majority of the world’s populace—both greatly and poorly educated (education being a separate issue from that of intelligence for me)—navigate the world most pragmatically, for it facilitates an optimal flourishing of awareness in regard to worldly givens. The evil daemon hypothesis, however, presents a lack of reliable predictability as to what will be, and posits no way of reliably establishing what is—and, because of this, is debilitating to the living of life.
My former, yet unanswered question to you was “what justifies the favoring of an evil daemon as true at expense of realism being true?” An answer would now be appreciated.
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The title of this thread is “what is scepticism”. In your reoccurring arguments you overwhelmingly favor Descartes’ branch of skepticism, even though in your OP you thoughtfully point to different branches of belief that likewise go by the label of skepticism.
To me, Descartes warped the notion of philosophical skepticism from one of it being a path toward greater wisdom—cf. the Ancient Greek
skeptikos, “thoughtful, inquiring”; Platonism standing out as one Ancient Greek example of this—to one of it being a ridiculous, endless stream of debilitating doubts in search for some inexistent grail of absolute certainty.
All philosophical skeptics throughout history were other than the typical modern strawman of “someone overcome by irresolvable doubts”; all philosophical skeptics that I am currently aware of held certainty of varying strengths in relation to how the world works, and all were realists.
BTW, Cicero, a philosophical skeptic, favored Stoicism in his “On the Nature of the Gods” … if this is of any interest to anyone. One point to this being a further illustration that philosophical skepticism is not about the rejection of plausible claims on grounds that they cannot be proven with absolute certainty. Cicero, it should be said, was religious … epitomizing a very distinct relation to that of philosophical skepticism and the commonly upheld dogmas of Abrahamic faiths.
I was more interested in discussing what philosophical skepticism logically signifies rather than debating against an endless stream of arguments about hypotheticals which can neither be disproven nor proven with absolute certainty—i.e., with perfect security from all possible error. This because, to my knowledge, no proposition can be successfully demonstrated to be perfectly secure from all possible error. Not even Descartes’ “(I doubt, therefore) I think, therefore I am” … nor the proposition that absolute certainty is impossible.
This, again, is not to deny that certainties of varying strengths always occur. The inductive conclusion that absolute certainties cannot be demonstrated, though not itself an absolute certainty, is nevertheless considered by me to be a (less than absolute) certainty of superlative strength. For another example, to doubt is to doubt what is real; thus, it is to in itself be in possession of certainty that something real is.
At any rate, if you seek solace via some promise of an absolute certainty—be it that realism is true or that some evil daemon concept one is momentarily entertaining is false—I’m not one to be of service in this regard.