An Unknown Person offered this definition of stupid: “Knowing the truth, seeing the truth, but still believing in lies.” What is Creator’s perspective?

While this contains many potential and actual truths, depending on the application, it is used as an explanation for something taking place. Here as well, there is deeper truth to be unearthed. The description would seem to be simply someone limited by their stupidity, to not be capable of accepting new information, almost like their brain is full and what was first learned can never be displaced because there is not even room to turn around and make a change. But this description is more than simple intellectual ability under review, it is not about level of knowledge and understanding, but the level of rigidity in being unable to change one's beliefs even in the face of proof their interpretation is faulty. While native intelligence is always a factor, especially if a situation or issue is complex and nuanced in ways requiring a fair degree of sophistication, and perhaps life experience, to really understand what is involved and see shades of meaning, and so forth, the more serious a concern here is the inability to shift faulty thinking and a belief in lies when they are exposed as such and the proof is in hand and visible. Many, many times people will continue to believe the lies they have held and will ignore evidence to the contrary, no matter how many times they are told new information that runs counter to their beliefs. This is a frank malfunction and illogical working of the mind to disregard what runs counter to the knowledge base, even when the words and meaning of the contrary opinion are understandable. So the problem here is not necessarily stupidity, it is intransigence, the frank inability to change a belief. People do this on a regular basis all during growth and maturation, and even though people tend to become set in their ways, that, too, is largely a function of outside manipulation to make them more and more rigid and unable to change their thinking because they have been cultivated to be suppressed and subjugated, and "good little prisoners" who will not think outside the box, or even stray beyond their prison walls, even though the latter might be abstract and not an actual physical fortification constraining them. Mind control programming creates this very state of being, where people believe what they are told by authorities, not because the authorities themselves have presented a logical and convincing case, but because the talking heads are reinforced by subliminal programming going directly into the subconscious minds of the viewers to program their beliefs, that what the talking heads say is true. When an idea is programmed to be accepted, it needs no corroboration or validation, it simply becomes the way the person thinks and they will be unable to override this built-in belief, no matter what they see or hear to the contrary—that is the hallmark of mind control manipulation. If you watch carefully what goes on around you, especially in the media, you will see examples every day of "groupthink" that is truly mind control manipulation being applied to warring factions, who will never come together and find a happy medium because their beliefs cannot meet in the middle, and this is a travesty but an important reason why humanity cannot overcome the chronic problems of society, where things that are mistaken happen again and again, and people and nations perpetuate the same follies over and over throughout history, never seeming to learn the lessons and recognize they are falling into the same trap over and over.