Ten years ago, if you wanted solar power that actually did something — not a trickle charger for a gate opener, real usable power — you were looking at several thousand dollars minimum, and half of it went to lead-acid batteries that died in five years. That world is gone. Panel prices collapsed, lithium batteries got cheap, and today $1,000 ...
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Everybody in this world knows the Rule of Threes. Three minutes without air, three days without water, three weeks without food. It gets repeated in every survival class, every forum, every paperback with a compass on the cover. It’s a decent teaching tool. It’s also wrong more often than it’s right, and the real numbers — the ones from documented ...
