Chesterton's fence
Before you tear down a fence, find out why it was put there. A famous bit of advice about change.
Imagine walking down a road and finding a fence across it for no obvious reason. You cannot see what it is doing. A tidy-minded reformer says, "I see no use for this. Let us clear it away."
The writer G. K. Chesterton had a reply. In his 1929 book The Thing, he wrote that the person should be told: "If you don't see the use of it, I certainly won't let you clear it away. Go away and think. Then, when you can come back and tell me that you do see the use of it, I may allow you to destroy it."
The idea became known as Chesterton's fence.
What it means#
Do not remove something until you understand why it exists. Rules, habits and systems often have reasons that are no longer visible. The person who built the fence knew something, even if that knowledge has been lost.
This does not mean the fence should stay. It means you should learn first, then decide.
Where it applies#
- At work. A strange step in a process may exist because of a past failure. Ask before you remove it.
- In code. An odd line may be fixing a problem you have not hit yet.
- In families and communities. A custom that seems pointless may serve a purpose you have not noticed.
- In your own life. A habit you want to drop may be doing a job for you, such as helping you relax or avoid something.
How to use it#
- Ask: why was this put here?
- Look for records, or ask people who were there.
- If you find a reason, decide if it still applies.
- If you cannot find one, proceed carefully, and be ready to put it back.
The other side#
The principle can be used as an excuse to avoid change. Not every fence is wise. The point is not to protect everything. It is to remove things on purpose, with your eyes open.