We assume that the the source language had personal pronouns then the question is how come only the personal pronouns; obviously, with many other linguistic phenomena, survived the millennia, millions of years?
अगर हम मान ल कि सोर्स लैंग्वेज में personal pronoun था तो सवाल यह है कि personal pronouns ही कैसे, जाहिर है कि बाकी लिंग्विस्टिक फिनोमिना के साथ, बच गया सहस्त्राब्दीयों मैं, लाखों साल?