法比歐‧帕庫奇: 波茲曼大腦悖論──法比歐‧帕庫奇

波茲曼大腦悖論──法比歐‧帕庫奇

你怎麼知道，你是個活生生的人，而不是一個剛剛形成，塞滿人工記憶的大腦，正在幻想中經歷並不存在的現實？ 這聽起來可能很荒謬，但這個論點，卻讓好幾代的頂尖宇宙學家徹夜難眠。他們將這個假設稱為「波茲曼大腦悖論」。法比歐‧帕庫奇探討了這個無趣的思想實驗。
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The Boltzmann brain paradox suggests that, in an infinitely old universe, it is far more probable for a random conscious brain with false memories to appear than for an entire universe like ours to form. Atoms could, by sheer chance, assemble into a brain that hallucinates a whole life and then vanishes in an instant. Modern cosmology draws on concepts like the Big Bang to counter this unsettling possibility, yet the debate persists. Even with mind-boggling odds—numbers dwarfing the stars—scientists use this paradox to test whether their models of reality make sense.