You know what still gets me? Looking back at 2021 and remembering how confidently everyone said inflation would just be temporary. The Fed, Treasury officials, most economists—they all had the same talking point: is inflation transitory? Of course it is, they insisted. Just some supply chain hiccups and pandemic weirdness.

So here's what actually happened. After the Fed slashed rates to zero in 2020, they pivoted to a new strategy: let inflation run a bit hotter than their normal 2% target. Makes sense on paper during a crisis. But then the economy started reopening unevenly, supply chains got absolutely wrecked, and the government was sending thousands of dollars in stimulus checks to millions of Americans. That combination? Recipe for disaster.

By spring 2021, CPI was climbing hard. April hit 4.2%—highest in almost 13 years. May jumped to 4.9%, June to 5.3%. Jerome Powell kept saying not to worry. "These one-time increases are likely to have only transient effects," he told everyone in March. Janet Yellen expected it to drop by year-end. The conventional wisdom was crystal clear: is inflation transitory, or is it going to stick around? Everyone bet on temporary.

They were spectacularly wrong.

By December 2021, CPI was over 7%. Six months later, it hit 9%—a 40-year high. And it wasn't just used cars or one sector. Food, energy, shelter, wages—everything was getting expensive. Worse, when wages started spiking throughout 2022, that only fed more demand and pushed inflation higher. Workers felt poorer even though they were earning more because inflation was eating everything.

Powel finally admitted the mistake by late 2021. The Fed switched gears hard. Four rate hikes in 2022 alone, from zero to 2.25-2.5%. They started quantitative tightening, flooding the bond market to push yields up. The whole hawkish pivot basically admitted: no, inflation wasn't transitory at all.

What caused this mess? Supply chain breakdowns were huge—the pandemic exposed how fragile global logistics really are. One shortage somewhere ripples everywhere. Then geopolitics hit: Russia invading Ukraine sent energy and food prices through the roof. Add government stimulus on top, and you had a perfect storm. The question is inflation transitory lost credibility real fast.

The lesson? Sometimes what looks temporary isn't. The Fed's 2021 playbook got rewritten by 2022. Economic forecasting is harder than it looks, especially when you're dealing with multiple shocks hitting simultaneously. For anyone watching markets back then, it was a masterclass in how quickly consensus can be wrong.