In this part of the conversation, Martijn Wismeijer discusses the concept of Bitcoin-backed loans for purchasing a house and the importance of not selling Bitcoin. He also talks about the evolution of the Lightning Network and the potential future developments in layer two solutions. Martijn shares his experience with NFC implants and their use as Bitcoin wallets. He emphasizes the need for customer feedback and the importance of incorporating it into product development. Finally, he advises newcomers to focus on Bitcoin and prioritize the purchase of a hardware wallet. In this conversation, Martijn Wismeijer from General Bytes discusses the company's Bitcoin ATMs and the importance of open source in the cryptocurrency industry.