I am curious @sidharthabahadur, @deandddd et al: are you aware of language and cultural interconnections between Tamil speaking folk and the Mayan, Olmec, and other South American native (I use this term loosely) people?
I have heard, and I think we have perhaps non-rigorously discussed, this conjecture previously and I would like to explore it more seriously and with perhaps more rigor. It seems a worthwhile topic to consider and strongly link with some detailed specifics...
It has even been suggested that perhaps various cultures that share the equatorial zone about the girth of the Earth may have Tamil relationships amongst various continents and islands.