Equal Lines
Two lines, a few fins, and a question that is easier to answer than it looks.
这个体验还没有翻译，所以文字仍是英文。
玩法
先看，再回答
Two lines, a few fins, and a question that is easier to answer than it looks.
- 不到一分钟 · 1 个问题 · 然后是解释
原理 — 建议试过之后再读
The fins do the lying
Both lines are exactly fifty units long. Fins that point outward make a line read as longer, and fins that point inward make it read as shorter.
Nobody is sure why. One idea is that we read the fins as corners seen in depth, and correct for a distance that is not there.