* https://www.investopedia.com/terms/s/sticky-wage-theory.asp
Store prices can be adjusted as often as once a week, but wages are generally adjusted only a couple times per year. So it makes sense that wages lag prices.
> This Chart [0] seems to show they at least move in tandem
They should move in tandem at wide granularities. But there's way too much noise in the chart to really be sure of anything from it. CPI is constantly tweaked, so its hard to even give much meaning to how the line moves throughout this chart. And why just hourly earnings here? There's lots of places that look like one leads the other and vice versa, but it may just be noise. There's too many confounding variables.
> Where are banks using inflation to exploit the working class, exactly?
Source? This Chart [0] seems to show they at least move in tandem (with wages maybe having the slight first mover edge).
>The money is used by banks to extract interest from people they give loans to
Again, I think you're poorly sourced. As sourced in the last comment, in the bottom 50% of US households, credit card debt is 50% of total debt (higher for lower percentiles, but the FED doesn't break that out), and as this chart [1] shows, credit card debt is priced independent of inflation.
Where are banks using inflation to exploit the working class, exactly?
[0] https://fred.stlouisfed.org/graph/?g=EK2n [1] https://fred.stlouisfed.org/graph/?g=EK2k