Of course it would be great if everyone remembered everything, but isn't an "I don't know" better than an 80% guess? The longer I do this job, the more likely I

Of course it would be great if everyone remembered everything, but isn't an "I don't know" better than an 80% guess? The longer I do this job, the more likely I am to say I don't know, when I don't know. > Can you recall what this code you wrote previously do? What it actually does might be different from what I remember. It might have been changed since then -- maybe by me, maybe by someone else. I might have made a mistake in the first place, and it doesn't do what I think. "I'm not sure, let's look at it."