I'm not a linguist. However, I find it difficult to believe some of the popular conceptions about origins of different languages. One of them is, Malayalam branched out of Tamil around 800-1000CE.
Weren't all Dravidian languages branched off from Proto-Dravidian language?
I don't understand the branching convention used for the languages. It's shown at some places that Kannada, Kodava and Malayalam were branched out of Tamil at different periods of history and in that order.
That would sound like, people residing in the present day, Karnataka , Kodagu district of Karnataka and Kerala were speaking dialects of Tamil before the emergence of their distinct Dravidian languages. Does that means Tamil is nothing but original Dravidian language?
I would like to think, as, linguistically Dravidian, Indians moved South, they first inhabited regions of present day Karnataka and Andhra Pradesh then Kerala and Tamil Nadu. Therefore, the first Southern regions to speak Dravidian language were Karnataka and Andhra Pradesh. Migration to the region of Kerala could be either simultaneous or before the migration to Tamil Nadu but never after that.
In my opinion, Dravidian language spoken in the region of Karnataka went on to become Kananda and so were the cases with Tamil, Telugu and Malayalam.
Is Tamil closest to the proto-Dravidian language?
Tamil's literary history starts from 2nd century BCE. Therefore, it might have frozen the words used during that period thus could be considered closest to the original Dravidian language. But the question is which Dravidian language. Dravidian languages had a long journey from North-West of the sub-continent(or beyond) to Tamil Nadu. Therefore, Tamil is closest to the Dravidian language that reached the region of Tamil Nadu.
Malayalam and Tamil:
The political history of Kerala and Tamil Nadu were intertwined till 10-11th century CE. The kingdoms followed Tamil kingdoms in their outlook. Since Tamil was already a literary language, it most plausibly became the court language of Kerala kings too. These kings could be either Tamils or Malayalees.
However, the Dravidian language in the region of Kerala developed into a distinct language long back. This could be seen from its hallmark accent. None of the other Dravidian languages show that kind of nasal accent. Late literary tradition cannot be used as a proof for its recent origin.
Tamil could have become the language of the local population because of elite Tamil domination. However, considering the fact that South Indian Shaivite, Budhist and Jain elites had hardly any inclination to educate the general population it was never going to be the case. In the end, the Dravidian language spoken in that region developed into a separate Malayalam language.
Retroflex approximants:
Malayalam uses two letters for retroflex approximant(l,r), but Tamil has only one. However, interestingly, Kannada works before 12th century also used two letters for l,r that could be equated to Malayalam retroflex approximant.
Chillaksharam:
I really don't know the correct English term. It could be defined as a consonant or retroflex approximant without a vowel. Malayalam has five of them. I'm not sure about Tamil. But Kannada has one and that is 'n'.
I consider Retroflex approximant and Chillaksharams are typical to Dravidian languages in India(Of course, just as Ayya and Amma even Chinese languages might display them, at least it's true in the case of retroflex approximant). In those two cases, Malayalam doesn't look like a sub set of Tamil but a distant language with antiquity greater than ten centuries.
My argument is let's forget about letters in Malayalam because of Sanskrit influence(it could be other way round too, Sanskrit might have been influenced by some North Dravidian language and added few letters). But when it comes to letters unique to Dravidian languages, Malayalam is closer to another Dravidian language Kannada than Tamil. So my belief is that Malayalam wasn't branched from Tamil but developed into an independent language from some Southern proto-Dravidian language.
Update 1: 29-November-2005
There is a new paper(excerpts Via Quetzalcoatl discussion forum) on Indian Y-chromosomes that speculates that Dravidians are indigenous to India and originated in South-West of India. In my opinion that makes Tulu closest to the original Dravidian language followed by Kannada and Malayalam. Perhaps, South-West origin of Dravidian languages is a very interesting aspect. In Southen coastal Karnataka, there is no mainstream Kannada. However, there are three dialects of Kannada, viz. Havyaka, Kunda and Are bhashe. I wonder if these represent clinal variation of Dravidian languages. What does one mean by dialect? I don't agree that there are any dialects of a language. They are just clinal variations. They are standards by themselves. I suppose Kodava Thakk is the clinal language between Kannada, Tulu, Tamil and Malayalam. It's not an influenced language(I have read opinions like it's been influenced by Tulu, Kannada, Malayalam and Tamil) but a standard language which could remain so because of isolation. I suppose it's difficult to pinpoint clinal languages because of imposition of a certain standardized languages to the whole population.
Update 2:
Chillaksharam could be present in Tamil too without being explicitly mentioned in the grammar.
Weren't all Dravidian languages branched off from Proto-Dravidian language?
I don't understand the branching convention used for the languages. It's shown at some places that Kannada, Kodava and Malayalam were branched out of Tamil at different periods of history and in that order.
That would sound like, people residing in the present day, Karnataka , Kodagu district of Karnataka and Kerala were speaking dialects of Tamil before the emergence of their distinct Dravidian languages. Does that means Tamil is nothing but original Dravidian language?
I would like to think, as, linguistically Dravidian, Indians moved South, they first inhabited regions of present day Karnataka and Andhra Pradesh then Kerala and Tamil Nadu. Therefore, the first Southern regions to speak Dravidian language were Karnataka and Andhra Pradesh. Migration to the region of Kerala could be either simultaneous or before the migration to Tamil Nadu but never after that.
In my opinion, Dravidian language spoken in the region of Karnataka went on to become Kananda and so were the cases with Tamil, Telugu and Malayalam.
Is Tamil closest to the proto-Dravidian language?
Tamil's literary history starts from 2nd century BCE. Therefore, it might have frozen the words used during that period thus could be considered closest to the original Dravidian language. But the question is which Dravidian language. Dravidian languages had a long journey from North-West of the sub-continent(or beyond) to Tamil Nadu. Therefore, Tamil is closest to the Dravidian language that reached the region of Tamil Nadu.
Malayalam and Tamil:
The political history of Kerala and Tamil Nadu were intertwined till 10-11th century CE. The kingdoms followed Tamil kingdoms in their outlook. Since Tamil was already a literary language, it most plausibly became the court language of Kerala kings too. These kings could be either Tamils or Malayalees.
However, the Dravidian language in the region of Kerala developed into a distinct language long back. This could be seen from its hallmark accent. None of the other Dravidian languages show that kind of nasal accent. Late literary tradition cannot be used as a proof for its recent origin.
Tamil could have become the language of the local population because of elite Tamil domination. However, considering the fact that South Indian Shaivite, Budhist and Jain elites had hardly any inclination to educate the general population it was never going to be the case. In the end, the Dravidian language spoken in that region developed into a separate Malayalam language.
Retroflex approximants:
Malayalam uses two letters for retroflex approximant(l,r), but Tamil has only one. However, interestingly, Kannada works before 12th century also used two letters for l,r that could be equated to Malayalam retroflex approximant.
Chillaksharam:
I really don't know the correct English term. It could be defined as a consonant or retroflex approximant without a vowel. Malayalam has five of them. I'm not sure about Tamil. But Kannada has one and that is 'n'.
I consider Retroflex approximant and Chillaksharams are typical to Dravidian languages in India(Of course, just as Ayya and Amma even Chinese languages might display them, at least it's true in the case of retroflex approximant). In those two cases, Malayalam doesn't look like a sub set of Tamil but a distant language with antiquity greater than ten centuries.
My argument is let's forget about letters in Malayalam because of Sanskrit influence(it could be other way round too, Sanskrit might have been influenced by some North Dravidian language and added few letters). But when it comes to letters unique to Dravidian languages, Malayalam is closer to another Dravidian language Kannada than Tamil. So my belief is that Malayalam wasn't branched from Tamil but developed into an independent language from some Southern proto-Dravidian language.
Update 1: 29-November-2005
There is a new paper(excerpts Via Quetzalcoatl discussion forum) on Indian Y-chromosomes that speculates that Dravidians are indigenous to India and originated in South-West of India. In my opinion that makes Tulu closest to the original Dravidian language followed by Kannada and Malayalam. Perhaps, South-West origin of Dravidian languages is a very interesting aspect. In Southen coastal Karnataka, there is no mainstream Kannada. However, there are three dialects of Kannada, viz. Havyaka, Kunda and Are bhashe. I wonder if these represent clinal variation of Dravidian languages. What does one mean by dialect? I don't agree that there are any dialects of a language. They are just clinal variations. They are standards by themselves. I suppose Kodava Thakk is the clinal language between Kannada, Tulu, Tamil and Malayalam. It's not an influenced language(I have read opinions like it's been influenced by Tulu, Kannada, Malayalam and Tamil) but a standard language which could remain so because of isolation. I suppose it's difficult to pinpoint clinal languages because of imposition of a certain standardized languages to the whole population.
Update 2:
Chillaksharam could be present in Tamil too without being explicitly mentioned in the grammar.