The rope has not become the snake. .. "the saltiness of the sea is the same everywhere"
Being an 'advaitist', I understand that well. But where is the 'rope'? Where is the 'salt'? Where from have they arisen? What is the medium in which they arose and exist?
You see, Buddha is one of my gurus, who has instructed me with Kalama Sutta. I am just not bothered about what Robert Thurman, Carl Sagan, Einstein or other notables that you have quoted say. I will accept only what my mind accepts. Buddha said:
"Kalamas, do not go upon what has been acquired by repeated hearing (anussava), nor upon tradition (paramparā), nor upon rumor (itikirā), nor upon what is in a scripture (piṭaka-sampadāna), nor upon surmise (takka-hetu), nor upon an axiom (naya-hetu), nor upon specious reasoning (ākāra-parivitakka), nor upon a bias towards a notion that has been pondered over (diṭṭhi-nijjhān-akkh-antiyā), nor upon another's seeming ability (bhabba-rūpatāya), nor upon the consideration, The monk is our teacher (samaṇo no garū)."
https://en.wikipedia.org/wiki/Kalama_Sutta