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
itchy_008 t1_iu2secq wrote on October 28, 2022 at 3:08 AM Reply to comment by jdorion in TIL about anti ninja floors in Japan. They were purposefully made to squeak as to alert people of intruders. by tpb01 good thing u were in sign-reading mode Permalink Parent 5
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