People have individual preferences that affect their interpretation of events. what is it called?

Bias

Explanation:

Bias refers to the preconceived notions that a person has and that affect their interpretation of events. Everybody has biases regarding a great variety of subjects. However, these are not always evident to the speaker or the listener. Nevertheless, if we want to convey accurate and objective information, we need to be able to put our biases aside as much as possible. This is specially important for people who educate others, such as professors and reporters.

no, to many things have came in to factor

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