This may be totally far fetched, but something in a Hurley thread made me think of this and I haven't seen it anywhere else yet. What if Desmond was driven batty by the numbers too, which is what lead him to be down in the hatch? Leonard and Sam were somewhere in the South Pacific when they heard them and it ended up driving them both crazy in different parts of the world. It would be possible that Desmond heard them also and had his own interpretation of what they meant. He is highly intelligent, but seems a very faith based person, potentially making him easier to manipulate by the right suggestions.
And who is the one person on the island that would probably immediately know the answer to "What does one snowman say to another"? To me, Hurley. Could the numbers be used to provide a steady stream of "watchers" or "guardians" of the hatch over a period of years?
That makes a lot of sense to me. Although the only thing is who are Leonard and Sam. Although, will Hurley ever meet Desmond? In another thread there talking about what will happen to him and i think he gets captured by "The Others"
At first the idea sounds like it might work but then I think: How could Desmond have figured out all the numbers and their use in the computer by just hearing them and going a bit wonky over them? And why would he start injecting himself with the "medicine" if he had no idea what it was for? I think all of that shows us that he was told how to use the computer and what the "meds" are for. And I'm not even really sure if he know what the significance of the numbers is.
But I do think that it would be cool for Desmond and Hurely to meet and talk because Desmond may be very surprised to find out the other "uses" of those numbers!
great post and theory, valid points because..... Leonard and Sam worked for the U.S. Navy...they were stationed at a listening post picking up one way transmissions over pacific....really boring job until the night they picked up the transmission of the numbers... another thing may be nothing but last year building the raft jin asks hurly for help tying the bamboo together, hurley responds to jin... what do you want to make snowballs....:-)