We live in a Big World ruled by Big Lies.
People feel that they are excused from detecting these lies, because they are supported by a mass of 'official' opinion - yet I think all the Big Lies I have encountered have been erected upon a single false assertion: the falsity of which should have been obvious to anyone who was honest.
Of course, the primary false assumption is hidden by a mass of secondary information - and is seldom obvious. Indeed the sheer volume of secondary information is used to argue in favour of the primary falsehood - yet one Big Lie undercuts any amount of data derived from the assumption the error is true.
For example, the lie (upon which modern leftism is based) is that intelligence is the same in all classes and races, contradicts our personal experience that intelligence differs significantly between people and is significantly inherited from parents.
A related lie that girls and boys/ men and women are innately identical in personality and motivations; therefore inter-changeable in jobs and social roles, is contradicted by experience all the time and everywhere.
Evidence Based Medicine was based on the lie that averages derived from randomised trials of large heterogeneous patient and treatment groups provides precise information on how to treat individual patients. In other words, if you take the average of a measurement done on a crowd of 10,000 people, it can be exactly applied to every individual in that crowd. This is an error of inference.
The Global Warming lie is built on the false assertion that humans can control the earth's climate. This is not an inferential error, but more a matter of total lack of supporting evidence. There is, of course, zero evidence that anybody can control the earth's climate - indeed, the lie is shown by the fact that nobody even tries to check or test this assertion.
(It is also an unsubstantiated lie that the earth's temperature can be predicted, but this is covered by various fabrications claiming that it has been predicted - so maybe it is not-necessarily-dishonest if people believe this one - although it usually is.)
The birdemic lie is based upon another arbitrary assertion: That the only effective therefore necessary response to a (falsely-asserted) lethal plague is the completely untested hypothesis of national and global lock-down-social-distancing (rather than tried and tested effective methods of the past).
(See Note added, below.)
My point is that these Big Lies are obvious to any honest person who thinks.
The fact that they are so prevalent is because most people are dishonest and don't think.
And the increased prevalance of Big Lies through the twentieth century and still increasing, is that dishonesty and not-thinking are more common and severe in recent generations, in the developed world.
And that is because of mainstream modern metaphysical assumptions. In a world that is officially purposeless, meaningless, and where all lives are necessarily futile - there is neither reason to be honest nor to think.
And so people don't.
Note added: The birdemic response is actually based on two (linked) Big Lies. First is that it is a terrible deadly plague, despite killing such a small % of people. ('They' simply lie, solemnly, that small numbers are actually Big). Second that a global totalitarian coup is the proper and necessary response to a TDP.
Further note: Another topical birdemic Big Lie... Launched today in the UK 'contact tracing' by smartphone for a droplet transmitted viral respiratory disease. Ridiculous! Impossible! Don't make me laugh! It's just the usual thing: a lying excuse for the Establishment's insatiable monomani: permanent, invasive, detailed and extensive population surveillance.