Is the “last mile” of inflation actually the hardest?

Michael M. Santiago/Getty Images
Economists aren't actually sure. Where did this universally-accepted but unproven idea come from?
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Gaslighter Worriers
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David Brancaccio
Host
Leanna Byrne
Host, BBC
Kelly Silvera
Executive Producer
Meredith Garretson Morbey
Senior Producer
Alex Schroeder
Producer
Erika Soderstrom
Producer
Ariana Rosas
Producer
Nic Perez
Director/Producer
Jordan Mangi
Digital Producer
Jesson Duller
Media Producer
Brian Allison
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Nick Esposito
Media Producer
James Graham
Producer, BBC
Jo Critcher
Producer, BBC
Olie D'Albertanson
Producer, BBC