The great Albert Einstein defined insanity as "doing the same thing over and over again and expecting different results." Jim Cramer thinks investors might have a case of market insanity on their hands.
With each new case of Ebola, the market balks. However, though index futures started out in the red on Friday, the market had a great rebound when the Dow Jones industrial average closed up 127 points. Investors who did sell into the panic of Ebola ended up feeling like chumps at the end of the day.
"You might not want to jump the gun and sell aggressively the next time we find out that some doctor is suffering from a disease that's so far killed one person in this entire country," added Cramer.
If the stock market is going to pack up and run for the hills every time there's a new case of Ebola in this country, like the futures did last night in the case of the doctor in New York City, then Cramer thinks investors should prepare for a lot of ups and downs.