Tumbling US unemployment and surging US inflation is not what really matters to 'Global' Janet. She knows what happened the last time "market" expectations were so disclocatedly bullish relative to "economic" expectations... and doesn't want to be driving the current bus off the great-er depression cliff...
A 'hold' in Sept - rally; a 'hike' in Dec - plunge; and this time 'hold' because everything is so decoupled...
"Boxed In" much? "Global uncertainty" is a suddenly very convenient truth - The Fed knows that any move to tighten ripples through the entire world's collateral chains; and with the global economy already bleeding its deflationary collapse into US economic expectations, a hike is simply piling on - i.e. no moar rate hikes.