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Unpack the question. What do you mean by "foolhardy"? What is your next-best option for your money?
In almost all cases, you should opt not to make a wager on a topic where you are at an information disadvantage. However, investments are not purely a wager - they're also direction of capital and sharing of risk (and reward) with for-profit organizations. It's quite possible that you can lose the wager part of your investment and still do fairly well on the long-term rewards of corporate shared ownership.