When doing an investigation, if you were to make a mistake what do you suppose you should do?

Partly it depends on what kind of investigation.  If you're talking about physical science and you're working independently you stop, find your error and correct it.  Sometimes that can really set you back!

If you're talking about forensic science and a legal investigation is involved you bring it to the attention of your supervisor.  Right away.  In that case transparency is crucial - otherwise the whole case could be compromised.

Explanation:

y e s

*tilts head* sounds more like a statement