Masayoshi Son, CEO of SoftBank, has dismissed concerns about an AI investment bubble, labeling such theories as "extremely stupid." Son criticized skeptics for lacking a deep understanding of AI and emphasized the technology's transformative potential. He warned that Japan risks missing significant wealth creation opportunities if it fails to embrace AI advancements. Additionally, Son predicted that nuclear fusion will replace natural gas as a primary energy source within 15 years, highlighting a major shift in energy dynamics.