to write that the bug then somebody has to review the back then you need to put the back into production and then by the time some user notice the bug you have gone through this massive context which because you probably wrote the bug several weeks ago and so even if you wrote the code that has debug the code is already alien for you and you have to dig into it and then you need to fix it you need to go review it you need to explain it to your boss you need to fill some JIRA issues and then you need to go again through all the