Yeah, but what proof from the game or creators have they given? I've always just assumed that the Promised Land was the Lifestream, but isn't there any info in the Ultimania book or from the creators? Or is it forever just going to be some mysterious thing nobody is ever going to find out about? Other theories I've heard which also sound believable are that it's really Midgar, the Northern Crater, and that the Cetra were looking for the 'Promised Land' by traveling from planet to planet.