(Bloomberg) -- Words are powerful. For the US economy, no-one’s more so than those of Fed Chair Jerome Powell.Most Read from BloombergMusk Leaves China With Tesla Driving Software Hurdles ClearedMusk Makes Surprise China Visit in Search of Tesla Revenue BoostElliott Built ‘Large’ Stake in Buffett-Favored Sumitomo, Source SaysYen Rebounds Strongly After First Slide Past 160 Since 1990Yen Watchers Ask When Japan Will Step In as Slide AcceleratesBloomberg Economics’ Fed sentiment index — powered by