[00:00.30]
[00:06.85]Today we're quite happy with paper money.
[00:13.61]Even more amazingly, we're happy with money we can't even see.
[00:20.10]Millions of dollars pass through this woman's hands every day,
[00:24.56]or rather, across her computer screen.
[00:30.23]She's a foreign exchange dealer, whose business is literally buying and selling money.
[00:35.74]Each day around $3 trillion changes hands in transactions like these around the world.
[00:44.73]And it's all built on trust.
[00:47.34]It has to be when you can't even touch the stuff.
[00:52.44]