I guess the analogy you chose makes it sound like a bad idea, but I'd use a different one. If you have a 300 year old house with rotting boards and a foundatio

I guess the analogy you chose makes it sound like a bad idea, but I'd use a different one. If you have a 300 year old house with rotting boards and a foundation that is cracked, would you replace individual boards or tear down the whole thing and start anew?