reverse polish notation 2025-09-26T17:44:48Z

The fluorescent lights of the electronics store hummed like angry wasps as I stood frozen in the camera aisle, my knuckles white around two discounted boxes. A Sony A7III marked "40% off original $2,000" versus a Canon R6 with "25% instant savings + 15% loyalty bonus." Rain lashed against the windows while a teenager behind me sighed loudly, his impatience radiating heat against my back. My brain short-circuited – were these stackable? Cumulative? Did tax obliterate the difference? That acidic t

Rain lashed against the lab windows like thrown gravel, the only sound besides my ragged breathing and the hollow tap-tap-tap of my finger on a smartphone screen. Three hours deep into debugging a thermal runaway simulation for a satellite component, and my slick, modern calculator app had just frozen mid-integral—again. That spinning wheel felt like mockery. Desperation tasted metallic, like old pennies, as I fumbled through app store dreck labeled "scientific." Then, buried under neon monstros

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The fluorescent glare of my basement workspace felt particularly hostile that Tuesday night. I'd been chasing a memory leak through C++ wilderness for seven straight hours, my coffee gone cold as hex values blurred into hieroglyphs. Every mainstream calculator app I'd tried that evening might as well have been a toddler's abacus – tap-tap-tapping through endless menus just to convert 0x7FFF to binary felt like performing brain surgery with oven mitts. My knuckles whitened around the phone until