You've heard of bitcoin before. It's the entirely digital, decentralized currency that supporters tout as the next step in financial evolution -- and critics call a massive scam. But what exactly are cryptocurrencies? How do they work, and why do some people believe they're as much a tool for conspiracy and crime as a tool for trade? In part 1 of this series, the gang invites returning guest Jonathan Strickland to explain the nuts and bolts of bitcoin, along with the advantages and flaws of the system.