00:00Can one barrel hold two separate sequences?
00:02Look closely, the answer hides in the timing.
00:05Centuries ago, a curious inventor tested a strange mechanical trick.
00:10Two separate loads sat inside one tube, stacked in a precise order, like layers in a tiny tower.
00:15Each one had its own ignition point and its own slow-burning cord,
00:19that created two stages, one barrel, and a tiny gap in timing that the eye could barely catch.
00:25So why did this bold design fade from history?
00:28Watch it again and look closer.
