I've always wondered why people feel they are able to hold constructive conversations about "God" without first having a mutual understanding of what the word m

I've always wondered why people feel they are able to hold constructive conversations about "God" without first having a mutual understanding of what the word means. Alan Guth sort of addresses this: http://www.youtube.com/watch?v=s47ArcQL-XQ#t=4m04s http://www.youtube.com/watch?v=s47ArcQL-XQ#t=4m04s