The technology heavy NASDAQ stock index rose almost 250 points today, and the Dow ended up 168 points. The rise came one day after the Dow had BRIEFLY dropped more than 400 points. Such high volatility in financial markets both RESULTS from and is FEEDING concern that the nation's economy may finally be slowing down. Minnesota companies have traditionally fared relatively well in times of recession, as the state's diversified economy blunts at least some of the impact. Sung Won Sohn is executive vice president and cheif economist of Wells Fargo banks. He says the fact that the state doesn't have many dot-com companies is a blessing in the current market: