Fed Chair Kevin Warsh faces his first Jackson Hole keynote Friday, and Wall Street is desperate for clues on interest rates — but Main Street just needs groceries to stop bleeding them dry.

Warsh has upended how the central bank communicates, refusing to offer what insiders call "forward guidance" about whether rates go up, down, or stay flat. He says it limits the Fed's flexibility and that markets have grown too dependent on hand-holding. The markets hate it. Working Americans should care because the result has been more confusion, higher mortgage costs, and no clear plan to crush the inflation still eating their paychecks.

The numbers tell the story. The Fed's preferred inflation gauge — the personal consumption expenditures index — sat at 3.7% in July, nearly double the central bank's 2% target. Core PCE, which strips out volatile food and energy, held flat at 3.3%. That's not a rounding error. That's a hidden tax on every gallon of gas, every cart of groceries, every month of rent. Surveys show most Americans still rank the affordability of necessities as a top economic issue heading into the midterm elections.

At his July 29 press conference, Warsh ducked repeated questions about whether the Fed would hike rates if inflation stays high. "He kept talking more about bringing inflation down," said Gennadiy Goldberg, head of U.S. rates strategy at TD Securities, "yet when reporters asked what he would do to achieve that, he didn't really have an answer." Mortgage borrowing costs rose after the Fed left its benchmark rate unchanged at 3.5% to 3.75%.

Three FOMC dissenters voted for a 25-basis-point hike at the July meeting — a rare split that signals real concern inside the Fed that inflation could become entrenched without action. Fox Business reported that Fed governor Beth Hammack has said multiple rate hikes may be needed to tame inflation.

Warsh told reporters that "any central banker… is more inclined" to raise rates "when he or she sees underlying inflation moving higher." But he hasn't said whether he thinks underlying inflation is actually worsening, or how he's measuring it. He cited the PCE index as the current gauge, then suggested it could change next year after task forces he appointed make recommendations.

David Wilcox, a senior fellow at the Peterson Institute for International Economics, said Warsh needs "to clarify the conceptual framework he'll bring to directing monetary policy" but has "refused to provide even that amount of illumination."

Gregory Daco, chief economist at EY-Parthenon, pointed out a glaring contradiction: In June, Warsh said market yields signaled investors believed inflation was coming down. In July, he said higher yields were contributing to tighter Fed policy. "You can't have both, right?" Daco told Fox Business. "If you want a pure signal from markets, you have to be honest about what markets are signaling."

Warsh has said he wants his Jackson Hole speech to focus on "big questions" — AI, productivity, demographic shifts, and the global economy's response to shocks from the Iran war. Fine topics for a seminar. Americans at the checkout counter have a bigger question: When does this stop?

The Fed serves Wall Street's need for certainty. It's less clear it serves the working class's need for relief. Warsh could clarify that Friday. Or he could keep playing coy while the price of everything keeps climbing.