# 49. Manipulation of bias and heuristics in decision making ## 49.5. Methodology/Refinements/Sub-species ### 49.5.47. Ostrich effect This is the propensity to ignore an obvious (negative) situation by adopting an attitude of "Ignorance is bliss". The manipulator takes advantage of the desire of the victims not to know something by not informing them. It is also known as "No news is good news". Governments constantly withhold bad news to keep us "blissfully ignorant".