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I don't know is an idiom that means the speaker does not have information or knowledge to answer a question or provide a solution. "I don't know" can also be used to express doubt, disagreement, or uncertainty.
Several elements, including helping someone "know what they don't know" or recognize a blind spot, can be compared to elements of a Johari window, which was created in 1955, although Johari deals with self-awareness, while the four stages of competence deal with learning stages.
Rumsfeld during a Pentagon news briefing in February 2002 "There are unknown unknowns" is a phrase from a response United States Secretary of Defense Donald Rumsfeld gave to a question at a U.S. Department of Defense (DoD) news briefing on February 12, 2002, about the lack of evidence linking the government of Iraq with the supply of weapons of mass destruction to terrorist groups. [1]
The phrase "I know it when I see it" is a colloquial expression by which a speaker attempts to categorize an observable fact or event, although the category is subjective or lacks clearly defined parameters. It has been a common expression since at least the 19th century.
So now I do not know what virtue is; perhaps you knew before you contacted me, but now you are certainly like one who does not know. (G. M. A. Grube translation) Here, Socrates aims at the change of Meno's opinion, who was a firm believer in his own opinion and whose claim to knowledge Socrates had disproved.
Some researchers include a metacognitive component in their definition. In this view, the Dunning–Kruger effect is the thesis that those who are incompetent in a given area tend to be ignorant of their incompetence, i.e., they lack the metacognitive ability to become aware of their incompetence.
Solipsism (/ ˈ s ɒ l ɪ p s ɪ z əm / ⓘ SOLL-ip-siz-əm; from Latin solus 'alone' and ipse 'self') [1] is the philosophical idea that only one's mind is sure to exist. As an epistemological position, solipsism holds that knowledge of anything outside one's own mind is unsure; the external world and other minds cannot be known and might not exist outside the mind.
Social cryptomnesia, a failure by people and society in general to remember the origin of a change, in which people know that a change has occurred in society, but forget how this change occurred; that is, the steps that were taken to bring this change about, and who took these steps. This has led to reduced social credit towards the minorities ...