

What about goats in circular pens? A goat is tied to the fence of a circular pen. How long does the rope need to be so that the goat can reach exactly half of the pen’s area? What sounds like a high school math problem was eventually solved in 2020 via complex analysis.
Here’s the answer:
Reminder that being gay, a woman with opinions, or a slave who wanted freedom, all used to be mental illnesses as well. What is and isn’t a mental illness largely depends on social norms.