TIL about anti ninja floors in Japan. They were purposefully made to squeak as to alert people of intruders. science.howstuffworks.com Submitted by tpb01 t3_yf8hvz on October 28, 2022 at 12:32 AM in todayilearned 187 comments 5,566
medi3val11111 t1_iu6wa6e wrote on October 29, 2022 at 12:31 AM There's book on this concept called "The Nightingale Floor." Permalink 1
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