Back in 2013, my friend Dave was obsessed with this new thing called Bitcoin. He'd spend hours explaining blockchain and mining to anyone who'd listen. Most of us thought he was nuts, wasting time and money on "magic internet money." One night, at a party, he bet us all that Bitcoin would hit $1,000 within a year. We laughed and took the bet. Fast forward to November 2013, and Bitcoin hit $1,000. Dave showed up to the next party in a brand-new car, bought with his Bitcoin earnings. We all stared in disbelief, realizing that Dave, the "crazy" crypto guy, might have been onto something after all.