马斯克一句“愚蠢至极”，又得罪了整个硅谷

Core Viewpoint - Elon Musk criticized the investment in small nuclear fusion reactors, arguing that the sun serves as a free and efficient nuclear fusion reactor, making such investments "super dumb" [1][2]. Group 1: Investment Landscape in Nuclear Fusion - Significant investments in nuclear fusion have been made by prominent figures in Silicon Valley, including Bill Gates, Jeff Bezos, and Sam Altman, with nearly $10 billion in private capital expected to flow into the sector by July 2025 [5][6]. - The fusion industry is viewed as a long-term infrastructure investment rather than a typical "hot trend," with a focus on developing a "civilization-level infrastructure" that could reshape human technological capabilities [5][6]. - Commonwealth Fusion Systems (CFS) has raised nearly $3 billion, focusing on high-temperature superconducting tokamak technology, which is seen as a promising path toward practical fusion energy [6][7]. Group 2: Diverging Perspectives on Nuclear Fusion - Musk's skepticism towards nuclear fusion highlights the engineering challenges and economic impracticalities associated with terrestrial fusion reactors, which he believes cannot compete with solar energy [15][17]. - The narrative surrounding nuclear fusion as a source of "unlimited energy" continues to attract investment, despite repeated delays in its commercialization [13][14]. - Musk argues that the costs and complexities of developing nuclear fusion reactors are not justified when solar energy has become significantly cheaper and more efficient [16][18]. Group 3: Alternative Energy Strategies - Musk advocates for solar energy and energy storage technologies as the most viable and economically sound solutions for future energy needs, proposing a comprehensive approach that includes both terrestrial and space-based solar energy systems [18][19]. - The concept of deploying solar AI satellites in near-Earth orbit aims to leverage the advantages of space for energy collection, providing continuous power without the limitations faced by ground-based solar systems [19][20]. - The ongoing debate between nuclear fusion and solar energy reflects broader themes in energy transition, emphasizing the need for a balanced approach to risk and return in energy investments [21].