Like with genes we also find isolated language populations.<quoted text>
Who ever said language was developed suddenly? Actually there seems to be several different language groups that don't seem to be connected or related.
I believe I have heard of monkeys developing new behavior without human intervention, but sadly I can't remember where.
And the supposition of indo-european messed up a lot of studies.
Sanscrite is not that old at all. Closer to 150 BC actually and derived from older Indian dialects.
They form one language family.
And then you would get frankly the Anatolian one, since it forms a hub. With even roots to semitic languages. Luvite and Luvian where hardly studied at all.
And they in turn interwoven again with african languages.
Ah well long story short. There is a board that explores such connections. To get to memes that would be universal.