I've been brooding about this since last week but I momentarily forgot about it during the long weekend. But now that I am back at work, I am once again reminded of this unfortunate event at work. I can't really go into so much details. Overview of the matter is that I gave instructions to junior supervisors on both work shifts and I expected that since they are supervisors, they could already understand the logic of things and I do not have to repeat myself. Add to that is they agreed to cascade the information to the people reporting under them. I ended up repeating the same instruction a third time because apparently, one group complied and the other didn't, which gave rise to some people saying that I am biased.