Today I Found Out
Why Blueprints are Blue (2016x31)
Air date: Feb 10, 2016
→Subscribe for new videos every day! https://www.youtube.com/user/TodayIFoundOut?sub_con→’t always been the easiest thing in the world to do. For the majority of human history, the most economical solution was simply to have someone make a tracing of the original plans.
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- Premiered: Oct 2013
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