I look at it as follows: If you are really undecided about something, it really means that the two (or more) options are not discernible enough (given informati

I look at it as follows: If you are really undecided about something, it really means that the two (or more) options are not discernible enough (given information you have), and so they are, from your perspective, very similar (they can lead to different outcomes but you do not know). So it kinda makes sense to decide it randomly.