Back in 2013, my friend Dave, a tech enthusiast, decided to spend his entire summer job savings on Bitcoin. At the time, it was relatively unknown and traded for around $100 per coin. We all thought he was crazy, teasing him endlessly about his "magic internet money." Fast forward to 2017, and Bitcoin's value skyrocketed to nearly $20,000. Dave, now a small fortune richer, treated us all to a lavish dinner, grinning ear to ear. He didn't sell everything, though. "Just in case," he said with a wink. Today, whenever cryptocurrencies come up in conversation, we think of Dave and his unexpected foresight, forever changing our perception of digital finance.