Joe Kennedy famously said that when the shoeshine boy gives stock tips, it’s time to get out of the market. The story goes that the investor exited the market just ahead of the great Wall Street crash of 1929, clued in to a bubble created by dilettantes piling in.
More recently, an ad popped up in Australian bus shelters, which read “this is the sign you’ve been looking for to get into crypto”. Shortly after, cryptocurrency tanked.
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