I just had an idea about how to explain bitcoin: A bitcoin is real estate on the most secure public ledger in the world. Bitcoins are similar to land in that that the total amount is fixed. How much real estate? 1/21 millionth.
If the blockchain was Manhattan Island, each bitcoin would be worth 44.8 square feet.
If the Blockchain was Texas, each bitcoin would be the equivalent of 8.2 acres.
If the blockchain was North America,each bitcoin would be worth 290.7 acres.
If the blockchain was the world, each bitcoin would be worth over 2.7 square miles.
Some land is barren and worthless, what about farmland?
There are 3.4 Billion Hectares of farm land globally (
http://news.nationalgeographic.com/news/2005/12/1209_051209_crops_map.html)
Avg price of farm land per hectare across the globe. $6,790.62 (#’s based on
http://www.businessinsider.com/booming-farmland-market-2011-4?op=1 Sampling price per hectare in Russia, Canada, US, Brazil, New Zealand, Zambia, Ukraine, Romania, Poland, Australia, Argentina, England.
Market cap of farm land ~$23 Trillion. 3.4 Billion hectares * $6,790.62 = $23,088,108,000,000
1 BTC out of 21 million as a ratio = 0.0000000476 $23,088,108,000,000 * 0.0000000476 = $1,099,433.71
So one bitcoin is a million dollars! On sale today for only 250!