If you can't get the answer in the usual manner, start at the answer and derive the question. If that doesn't work, start at both ends and try to find a common middle. In case of doubt, make it sound convincing. Team work is essential. It allows you to blame someone else.
All unmarked beakers contain fast-acting, extremely toxic poisons.
If at first you don't succeed, destroy all evidence that you have tried. If nobody uses it, there's a reason. If it should exist, it doesn't. If it does exist, it's out of date. Only useless documentation transcends the first two laws.