I think people's goal in investing is to make a profit, even though some people don't really know the details.
Next they will study the risks and other factors if they have invested several times.
Venturing into a business or an investment without knowing but doing it all the same simply because others are doing it is not wise at all. I believe smart businessmen and investors would first find a way to learn and understand the business/project and will move ahead to know the risk involved and the profitability in them. It is not until this that they will know if what they are hearing/reading is a lie or the truth, and this will expose the danger of committing their money to them.
To me, this is smart enough and will avert the danger of looking foolish if you can't defend what you invested your money into, especially if it now fails and you can't convincingly say this or that made you invested your money in them, and also for this or that reason was why you invested the money. These days, people are so gullible to the extent that you can brainwash them easily because they are desperate to make money, not knowing that as some would make the money, some will lose so much as well, even as some would be dupped, which calls for caution and the fully understanding of what we are committing the money to.
It will even be a thing of pride for the person in this regard if they understand as they know what they are actually doing unlike those who will just be following others blindly.