mistaken idea

See: fallacy
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References in classic literature ?
I know he has forgiven me because in some mistaken idea I have done things that prevent him say goodbye as he ought, and he may think that in some more mistaken idea this woman was buried alive, and that in most mistake of all we have killed her.
It was then that I understood the careful trimming of the trees which had led me to form the mistaken idea when first I opened my eyes upon the grove that it was the playground of a civilized people.
And my mother favoured the company with a particular account of that lady's mistaken ideas and conduct regarding the matter in hand, concluding with, 'Now, don't you think it is wrong?'
But we may form very mistaken ideas on this subject, if we do not call to mind in our calculations, that the extent of revenue drawn from foreign commerce must vary with the variations, both in the extent and the kind of imports; and that these variations do not correspond with the progress of population, which must be the general measure of the public wants.
"I think, Ruby," she began hesitatingly -- for it was difficult for Anne to speak to any one of the deepest thoughts of her heart, or the new ideas that had vaguely begun to shape themselves in her mind, concerning the great mysteries of life here and hereafter, superseding her old childish conceptions, and it was hardest of all to speak of them to such as Ruby Gillis -- "I think, perhaps, we have very mistaken ideas about heaven -- what it is and what it holds for us.
Moreover, in order to understand any man one must be deliberate and careful to avoid forming prejudices and mistaken ideas, which are very difficult to correct and get over afterwards.
Moreover, the mistaken idea that opening up to China has hurt the U.S.
This explains G Griffths's desire and preference for him to shop on Sundays, his mistaken idea that Christians who work in industry put no money into industry, that there are no Christian shareholders in industry and his careless, inaccurate assertion that Christians have no Christian holiday of their own.
Someone once had the mistaken idea that the tram and bus stations had to be kept out of sight, but simply ended up providing hideyholes and hideous, filthy enclaves in which to sit and drink coffee etc.
A fallacy is said to be a false or mistaken idea, by which people are often deluded but cannot hold, when subjected to proper scrutiny.
Katrina Saba: Your goal is to get parents to immunize their kids, not to win a debate or correct every mistaken idea.
Sometimes we have the mistaken idea that when we're promoted into a new role, we're there because we're supposed to know everything--and we don't.