Jumped in the janky Time Machine to grab a bagel in a near future, and there it was, a sign in a window, "We Still Accept Cash." Everything else? Swipes, taps, and nods. Money's gone invisible, like it's just numbers in the air we breathe. You can't touch it, smell it, or stash it under your mattress.
Nobody's carrying wallets. It's like they've offloade…
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