Fed Chair Jerome Powell's Jackson Hole remarks sparked a Wall Street rally and renewed rate cut hopes, but Arthur Laffer remains cautious. He expects the August inflation numbers, including CPI and PPI, to have an outsized impact on the Fed's decision-making process. Laffer notes that while the short end of the yield curve has come down, the 10-year rate has ticked up, steepening the curve. He believes the Fed does not set the term structure and that long-term rates are driven by market expectations of inflation, not the Fed funds rate. He sees AI as a long-term driver of productivity growth and believes the S&P 500 can reach 6,600 this year and 7,000 next year.