Chinese toilet paper, Hitler and 30 mins

Chinese invented toilet paper in 2nd century BC. By 6th century AD, toilet paper was used with inscribed quotations/commentaries of Confucian classics.

Average life expectancy in China was then 28. Considering it takes about 384 trees to make toilet paper that man uses in a lifetime (average 67), it gives about 5.5 trees/year for one man and at least (low-efficiency production in ancient China) 154 trees for an ancient Chinese.

Not only Chinese had fun. During WW2, humor and patriotism were inseparable. Check¬†Hitler’s depictions on WW2 toilet papers. Yet another creative strain of Allies?

Since 2010, things got more economic.  30mins + 40-A4-sheets = one toilet paper roll.

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