So, in your view, you think that if the earth is really flat, and everyone believes it's a globe, would not take effort by a secret organisation to cover up the fact that the earth is actually flat, while also making everyone believe it's a globe.

Correct.

Are you sure about your answer?

I am sure that humanity is always stupid and wrong historically, and requires no help for it. We do it all on our own - no conspiracies necessary.

And it sounds like your mind is made up about this hypothetical question too.

Don’t get me wrong. I’m not saying that there couldn’t be or isn’t a conspiracy (unbelievably large/long, or much more limited/small) to do as you suggest - just that one isn’t necessary/needed. If the world were flat and everyone believed it round, that would not require any conspiracy. If stars were not suns, and instead were lights in the sky of a totally different nature - once again, it would require no conspiracy. Humanity is always stupid and wrong, and we consistently teach those wrong and stupid beliefs (under the guise of “fact” and “science” no less), en masse, from childhood.

Wonder how people can recognise signs they are in cognitive dissonance.

Firstly, everyone is - it’s a human characteristic caused by our “rational” minds. Recognizing it is simple, but an objective external analysis can often help to identify it better than we can internally. Cognitive dissonance is simply holding two or more paradoxical/mutually exclusive/contradictory views simultaneously. Nothing more. A common one is believing they are a law abiding citizen and then speeding. Everyone has cognitive dissonance, it is completely painless, and often invisible to the experiencer (without careful introspection, and/or external help).

You think historical record about humanity is correct?

Lol. Of course not. History is largely stories/mythology. However, it is reasonable to both study and learn from it. Are you suggesting that people aren’t most often wrong and stupid (today and/or in the past) without any external help/conspiracy?

And a normal person would probably conclude that in order for everyone to think it's a globe, but it's actually flat, would take considerable programming, propaganda, and cover up

I think they have been encouraged to think such things through advertising and the myth of progress (modernism and modern “education” pushes this vain belief that we are better and smarter now. we simply couldn’t be wrong about such things because we are so evolved and educated compared to our primitive ancestors). What they misunderstand is that every generation has thoughts like this, and believes they have the truth with very little, if any doubt. That is always the norm, and they are always wrong. If they don’t have an answer, they make one up - the basis of almost all mythology, a lot of which is masquerading as science today. This biological proclivity is connected to that cognitive dissonance. What we cannot rationalize, the brain requires rationalization for, so we “fill in the gaps” with just about anything in order to feel better about our ignorance. This very much includes things which contradict other things we already believe/know.

At a massive level, because you have to cool so many people about something totally obvious and core to our daily experience.

It reminds me of a twain quote and a song lyric with a similar message : “You’ve been educated stupid. And are too dumb to notice. Or maybe just too evil to care.”

We believe LOTS of nonsense as a result of that “education” (really conditioning, by rote, under the guise of education - from childhood), but it also doesn’t really require a conspiracy. People (most of them anyway) teach what they believe (even and perhaps especially when wrong) primarily because they believe it.

So, with that level of manipulation, wouldn't it also be possible to fool you into believing historical records, into believing humanity is the cause for the wars and terror.

Absolutely. And this unquestionably goes on - seen contemporarily and historically. However, it doesn’t - in and of itself - require a conspiracy concerning the shape of the world.

If the earth is flat, it would change everything about how you see the world.

It certainly can, arguably should - but in my view it does not necessarily involve mass conspiracy. Claims of it requiring mass conspiracy/ being “conspiracy theory” are pushed, disingenuously by the heavily advertised (i.e. heavily funded) flat earth psyop specifically to suppress and prevent people from seriously discussing/researching the valuable subject. Claims of “conspiracy theory” only have that one purpose - discrediting/suppression.

The shape of the world is not a conspiracy, nor is one required for most everyone to be wrong about it. Claims of conspiracy are primarily a distraction from an extremely valuable subject to study.