This may mean directly asking an elder for an account of her or his behaviour, and, after discussion with the person, forming a provisional judgement.
"Surely 11 hurried overs is all you need to form a lasting judgement?"
I didn't know either man or their respective backgrounds well enough to form a valid judgement.
Guideline 8, Evaluation (page 21) provides guidance on forming a judgement about the tolerability of risk.
You have a particular responsibility when forming a judgement about the tolerability of risk.
The evaluation is a summing up which places the work in the experience of the critic, and helps the reader to form a judgement.
Ultimately, Hazlitt tried to form a balanced judgement of the play.
To form a judgement he seeks further information.
Then, holding everything else constant so far as we can, we form a judgement about what will most probably happen.
From the merely speculative point of view, therefore, we cannot form a judgement at all.