On Thursday, a picture of a cat walking on a set of stairs started to go viral. The original post asked readers if the cat was walking up or down the stairs.
4月9日,一张猫咪走楼梯的烧脑神图掀起讨论热潮。发布这张照片的原帖问道:这只猫到底是上楼还是下楼?
The story has since exploded and no one online can agree if the cat is running up or down. Commenters in both camps keep citing architectural and biological reasons for their conclusion.
随后,这个帖子被疯狂转载,这只猫到底是上楼还是下楼,网上没人能取得一致意见。两大阵营纷纷引用建筑学和生物学知识,不断为他们的结论寻找依据。
But it's obvious that the cat is going down the stairs.
但显而易见,这只猫是在下楼。
First, look at the architecture of the stairwell. The nose of the stair treads is overhanging the riser, which has a pebbled texture.
先来看看楼梯的建造结构。楼梯梯面的收边条伸出了鹅卵石材质的梯级竖板。
This is what the textured rise and stair nose might look like in real life:
下图或许可以还原梯级竖板和楼梯收边条在现实中的模样:
Plus, if you look closely, there's even a slight shadow under the overhanging nose of the stair treads. These shadows would only be visible if the cat was going down the stairs towards the viewer who is looking upstairs. The light coming from the upstairs landing is causing the shadow of the tread to fall on the riser:
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