Change is in the air at the Federal Reserve. Chairman Jerome Powell’s semiannual monetary policy testimony in the Senate gave a big hint that we can no longer count on the explicit policy of gradual interest-rate hikes to continue too much longer. That doesn’t mean gradual rate increases will end, only that the Fed will rely less on forward guidance. A slower or faster pace of hikes, an extended pause, or even a rate cut are all possibilities at this point.