system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If I could legally build a 10 km² yard extension out of dirt and sod off the coast of new Brunswick, have I officially increased the land area of Canada by 10 km²?

Essentially? Is Canada (or any countries) land area a fixed number or are people responsible for making sure the number stays as accurate as possible?
gpt
Theoretically, but since 10 km^2 is only about 0.0001 percent of Canada's total land area, it doesn't really put a dent in the official number.

The problem with measuring the land area of a country, especially one with an astronomically long coastline like Canada, is that it's functionally impossible to accurately measure to even a relatively large margin of error.