So it was hot despite the oak shadow. I'll go for some onions later. Now to the topic. Except what Leserin said, what's the most significant difference between fiat and bitcoin? It's the fact that there is a fixed amount of bitcoin that can be ever produced and you can't change that amount. In other words you can't regulate it (unless you have the 51% of it). Fiat regulations are made to deal with inflation etc. Some reading about gold backed currencies will help too...