Yes and No
In the twelfth century, Peter Abelard wrote a strange little book called Sic et Non, Yes and No. It did not tell readers what to believe. Instead, it placed authoritative Christian texts side by side that flatly contradicted each other. One Church Father said yes. Another said no. Both were respected. Both were orthodox. Abelard offered no resolution. His point was not to solve the contradiction but to force the reader to think.
What made this radical was not disagreement itself. Disagreement had always existed. What shocked people was the refusal to harmonize it. Abelard quietly implied that moral and theological certainty was not handed down fully formed. It had to be worked out in the mind and conscience of the individual. That was dangerous. It shifted responsibility away from authority and onto the person reading.
That small medieval exercise turns out to be uncannily modern.