Columnist: Taking a strong position on an issue makes one likely to misinterpret or ignore additional evidence that conflicts with one' s stand. But in order to understand an issue fully, it is essential to consider such evidence impartially. Thus, it is best not to take a strong position on an issue unless one has already considered all important evidence conflicting with that position.
The principle that it is reasonable to take a strong position on an issue if one fully understands the issue and has considered the evidence regarding that issue impartially is the one that the columnist's reasoning most closely conforms to.