Heresy is very useful, as it prevents the player's converted units from being able to attack and distract remaining troops. The technology helps minimize losses. Players should research Heresy if they anticipate an enemy attempt to Monk rush.
Given its high cost, however, it is not recommended to research Heresy if opposing players do not regularly use Monks for conversion.
As seen in the table above, Heresy is notably absent from the technology trees of most civilizations with access to powerful units such as elephants, with the sole exception of the Malay (since their Battle Elephants are the cheapest, but weakest).
Civilization bonuses Edit
|“|| As the Middle Ages progressed, Christianity in Europe faced a number of challenges, including heresy. This word came into use in the 13th century to define an opinion or doctrine that was contrary to church dogma. New opinions popped up at an alarming rate. Philosophers studying the Bible suggested new interpretations. Contact with pagan beliefs led to distortions of dogma in the hinterlands. Anyone who attempted to newly interpret the lessons of the Bible risked being accused of heresy. Coming to believe in a heretical position was seen by church leaders as a supreme sin, and many people condemned as heretics were burned at the stake.|
—The Conquerors manual