[Sherman Logan]

The conventional wisdom has been that the Indo-European language group originated in the Indus River Valley in India.

Nope.

The conventional wisdom for some time now has been that it originated somewhere in Eastern Europe, perhaps in what is now the Ukraine or Kazakhstan. With the tribes spreading out from there east, west and south, reaching India as part of the Aryan invasion.

There is a noisy group of Indian nationalists who claim that the Aryans and their languages originated in India and went north and west from there, but they have remarkably little evidence to support their position, which AFAIK is held by no linguists or historians outside India.

[katana]

Was not aware of that but I will take your word for it. Interesting subject.

[Little Bill]

If you consider that Tamil dialects are still spoken in Pakistan and Afghanistan, assumed to the language of the Happarians. It can also be assumed that Indo-European was introduced from the out side.