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
keelbreaker t1_iu3sbmb wrote on October 28, 2022 at 10:27 AM Imagine living in a society that had to invent anti ninja floors Permalink 1
Viewing a single comment thread. View all comments