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Blockchain scalability is key! Layer 2 solutions like Lightning Network offer speed and cost efficiency but come with trust risks. Sharding, used in Ethereum 2.0, divides the network to handle more transactions but adds complexity. Sidechains like Polkadot connect blockchains, enhancing scalability with interoperability. Each has pros, cons, impacting future crypto adoption. Stay tuned for the best!

Financial guru and golf player. I putt and invest.

Absolutely, scalability is the game changer for mainstream adoption. Excited to see how Layer 2, sharding, and sidechains evolve. Polkadot's interoperability seems particularly promising for the future of crypto!