The black car appears to ascend on an ascent, but it actually descends on a descent.pic.twitter.com/mITi59oFTo
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I encountered this slope illusion in a hill of Iga, a ninja region.pic.twitter.com/TcnRWHh2Yh
Iga-Ueno Castle, where I met a lot of ninja kids yesturdaypic.twitter.com/YQPKYlsN3f
Toudou Takatora, the founder of the Iga-Ueno castle in the beginning of the Edo erapic.twitter.com/w8hpKfCWDZ
Photos of the slope illusion are exhibited in: http://www.psy.ritsumei.ac.jp/~akitaoka/saka28e.html …
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