Well if I could add my 2 cents i would say this, i think there are some things to consider:
Silver in it's run up to 50 in 2011 was trading 9 times the volume of the amount of physical supply available.
There are a few people in the industry that believe we may someday determine silver is more precious then gold. The GSR ratio was set historically at a 15/16 to 1 as it was largely based on the theory that gold was 15 times more precious than silver.
And of course i can go on and on about its unique properties unlike any other metals. I think you have you a possibility of a scenery that the world reverts back to real money that in-turn causes the masses to run to physical.....not to mention central banks are exiting the dollar and taking gold/silver....right now (which I was in my LCS today and he is being quoted 2 months for any silver from a wholesaler) as soon as the paper gig is up. i think parabolic is one scenario that is quite possible.
Why is that so hard to image? Silver hit $50 in the early 80/81 and adjust for inflation that is $130ish. I think all bets are off when we start playing musical chairs with physical supply. If anybody is reading and paying attention to what is happening right now, ie, china 5% currency devaluation, jp morgan taking delivery of a reported 350 million ounces after being kicked out of the paper market, money printing, debt to GDP #'s around the world, regional tensions, socialist bs, blah blah blah.
Nobody knows but the good Lord upstairs but i think if you educate yourself on the facts, consider the world we live in once you look past the vail, your left with only one conclusion. Silvers price in the years to come is a lot more likely to be closer to $1000 then $5....once real money is re-established.....but that's my 2 cents