Sorry, Jim -- I misinterpreted your "no plan" comment -- and perhaps there's nothing wrong with a no plan idea -- just stay the course and ride it on out. Seems like we hear different suggestions from friends:
1. Buy gold -- if the economy tanks, gold is valuable. Value of dollar is going down but recently value of gold has been rising. Possible downside: gold is too high already, and might itself be a bubble.
2. Buy bonds -- as interest rates go down, bonds generally go up. (IE - if you have a 6% bond, and interest goes down to 5% then your bond is competing against other new bonds of same maturity and yours pays more dividend so it's price goes up). Possible downside: bonds go up and down like stocks and they are heavily influenced by inflation.
3. Dollar cost average -- put in the same amount every month into a good investment (stock, bond, or mutual fund). If the price declines, your same dollar investment that month will buy more. If price keeps declining, you get even more. If it goes up, conversely, you buy less. And that's the right thing to do -- buy (more) low, and buy (less) when high. An easy, no sweat plan. Possible downside: What if this is now a black swan and the market goes way down for a very long time? Your investment will go down for a very long time, and you may not have that much time.
4. Time the market -- buy when you think its low, and sell when you think its high. If you're right, you get rich. Possible downside: Most studies (including one that earned an economist a Nobel Prize) show that market timers lose -- Greed vs. fear -- a tough call.
5. Diversify your investments -- some stocks, some bonds, some real estate, some ..... They won't all go up (or all go down) together and since most over time go up you'll be ahead over time. Possible downside: Too old, not enough time maybe. Or, this is a black swan and they all go down for too long a time. Or, I'm just plan greedy and want more to go up and I'll take the risk.
6. Don't invest at all -- too much like gambling. Spend it on things. Possible downside: We work hard for our money -- maybe we should think about it and let some of our money work for us.
7. Have a rich uncle or win the lottery! Don't we wish?