Investing in any stock is kind of like gambling in the sense that you're betting your money on a company's future performance. But how do you bet on a technology that could, in the worst-case scenario, "pose catastrophic or existential risks to humanity," or best case, "bring forth an age of miracles"? To some extent, Anthropic suggests in a letter at the top of its S-1 filing, you have to just believe. Anthropic's 335-page S-1 prospectus, filed…