New ask Hacker News story: Ask HN: If your code no longer makes sense to you do you leave it as is?

Ask HN: If your code no longer makes sense to you, do you leave it as is?
3 by amichail | 4 comments on Hacker News.
There was probably a good reason why you wrote it that way a long time ago. So as long as it seems to work, wouldn't leaving it alone reduce the probability of introducing bugs?