system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5 why the coastline paradox is a paradox?
gpt
The term paradox does not necessarily mean something that is impossible, but can also be applied to some things that are just so counter intuitive that you would not remotely think of them

The counterintuitive thing here is that you would think that the measurement of a coastline is consistent.  Most people find it incredibly counter intuitive when they are told that the answer varies from a fixed number to infinity depending on how you measure it.