All opinions are based on one or more premises.
One of the most unexamined of premises is that we can trust what we’re told by the experts and the establishment.
The first question is: How much of what we’ve been told is not actually true?
I really don't know what this means. Thehe preponderance of the evidence, based on examination of the DNA of human remains sampled in documented locations and corresponded to approximate times of death based upon accepted dating protocols, leads to migrations from the Pontic-Caspian steppe as the ancestral origin for the Irish (R1b haplogroup) origin. So it would be most interesting if you have facts otherwise, and not just mysterious knowledge.
Well the idea that the British Isles were settled by the "Ten Lost Tribes" is not true.
That there were Ten Lost Tribes is not true.
That Cleopatra was a sub-saharian African is not true.
That Columbus was sailing to prove the world was round is not true.
That Ancient Greece was a direct democracy is not true.
Would you like me to go on?
“The first question is: How much of what we’ve been told is not actually true?”
You can start with “the lost tribe of Dan relocated to the British Isles” as something you’ve been told that isn’t actually true.