Theory that \'Celts\' are a myth

[keravnos]

First appearance of Celts in Greece.

Cambrige Ancient History 6. 4th cent. BCE -page 172

Dionysus wanted to pay his old debts to Sparta. In 369, more
than twenty ships arrived with 2,000 Celts and Iberians, the first
appearance of such a force in mainland Greece, with fifty cavalry and pay
for five months. They made a very good impression (Xenophon Hellinika vn. 1.20—
2, Diod. xv.70.1), and a similar force appeared the next year.

Later on in the same page, it is written that

In summer 368 (the last
prytany of the archon-year 369/8), ambassadors came from Dionysius to
Athens bearing letters about the 'building of the temple', i.e. the temple
of Apollo at Delphi, destroyed in 3 72, and about the Peace (Tod no. 133).

That in itself may be insignificant, still, 2000 Celts and Iberians landing at Peloponnese and learning a thing or two about their environs with Dionysus proposing to rebuild the Temple of Delphi, I think are very plausible reasons why in 279 a huge celtic army went for the Oracle of Delphi, the one that their former employer Dionysus of Syracuse had given money to rebuild. They played a major part in changing the Hellenic way of fighting from the aspis (round shield) to the thureos (oval shield). In fact, post 279 BCE certain historians suggest that there were only two types of line infantry in the Hellenistic world, those carrying thureos shields and the pikemen (who carried small round shields), those fighting in the Macedonian manner. To have such a profound impact, they must have existed, no?

The ancient greek writers called them either Keltoi or Keltai. They were adamant that they existed. There is evidence in the form of archeology (from graves found to coins) that suggests a cultural link between all celtic areas, Britain included. They were defeated and later "Romanized" then post 449 CE "germanized" ,and then post 1066 "Normanized" (please pardon the new words), still from what I have read the vast majority of the population is genetically the same. That means that cultural domination is the key not mass exodus/influx of new peoples. The same thing happened in Anatolia after the Turkish conquest and elsewhere in the world. Don't worry though. Last I checked the entire world is speaking and writing in english, not their birth languages, just like me and others in this forum.