I don't like to get reminded that never have the right measurement of things

Wow 😮

I learned a thing. Thank you.

I argue that this is due to the poor definition of a coastline. I don't know why. I go into problem solving mode, and I'm like... yeah... poorly defined problem. Root cause found... uhh... now what. Coastline starts at where water reaches only high tide? No. Continental shelf? Certainly not. Point where building foundations are no longer stable? Maybe, but I don't know enough... yet.

.... is this ADHD? Seriously, my psychiatrist thought I was right on the border. I dunno

Edit: I'm dumb and misunderstood the problem. Disregard me

I am. How else would you measure a coastline? The exact line is constantly changing with waves and the tide, so to get any kind of answer requires that you decide where the coastline is and mark it somehow. Driving nails into the waterline at the same water level and adding up the distances between them isn't really a bad approach.