I have spent some time reading other (mostly closed as duplicate) questions on random reputation gain and loss. I have not found one that matches my case or answers my question and I just still don't get it so I wanted to ask my own question.
Earlier today, I have noticed a loss of -1 reputation. Not long, later I was given the 1 point back.
This question has been asked in January. It's not the type of question I would even look at, so most likely I have not even seen it nor done any voting, commenting, etc. on it.
So my question is :
How is my account associated with that question? Why did I randomly lost and then re-gained the reputation?