'profound illusion' is correct and usable in written English.
You can use it to describe an idea or belief that is not true and cannot be trusted, but is accepted as true by most people. For example, "The public was under a profound illusion that the candidate was honest and could be trusted to bring real change to the country."
Additional profound illusions come from studies investigating the perceived duration between one's action and its inferred effect.
Thus he can find only good to say of the generally mocked Titanic and speaks of its director, James Cameron, in the same breath as DW Griffith, while questioning the depth and significance of Antonioni: "I don't happen to believe that Antonioni's work is profound, but the illusion of profundity is so spooky and so exquisitely managed, that it will do just as well".
Big words like 'Salafist totalitarianism' and 'Islamo-fascism' certainly help project the illusion of profound knowledge.
I cling to those that are painful, those that arise from a profound crisis of all our illusions.
The consumption of food flavorings is one of the modern era's most profound collective acts of submission to illusion.
The consumption of food flavorings may stand as one of the modern era's most profound collective acts of submission to illusion.
The accumulating impact of so-called big data will be both profound and profoundly unpredictable; but one illusion that urgently needs dismantling is that it will "work" only as anticipated, or that it renders other debates redundant.
Now, neuroscientists have shown that they can make this experience physical, creating a "body swapping" illusion that could have a profound effect on a range of therapeutic techniques.
"This will require profound change, no one is under any illusion about that," says Shennan, who is working on the basis that his budget will go down about 16%.
Tricky yet profound, Ms. Morgin's works invite us to see through our veils of illusion.
