Columnist: Taking a strong position on an issue makes one likely to misinterpret or ignore additional evidence that conflicts with one's stand.
Evidence
To understand an issue fully, UF → CEC it is essential to consider evidence that conflicts with one’s stand impartially.
Conclusion
It is best not to take a strong SP → CEC position on an issue unless one has already considered all important evidence conflicting with that position.
Evaluate
The argument assumes that SP → UF for one to take a strong position one should fully understand an issue.