What are symbols good for?

So, I'm curious to understand the significance of symbols in various aspects of life, especially when it comes to finance and cryptocurrency. What are the key benefits or purposes that symbols serve in these realms? Are they simply aesthetic representations, or do they hold deeper, more functional roles? I'm particularly interested in how they might facilitate communication, enhance recognition, or provide unique identifiers in the world of digital currencies and financial transactions. Can you elaborate on the practical applications and advantages of using symbols in these contexts?