Predicting future events in a person's life based on the lines on the palm of the hand is an example of Pseudoscience. A pseudoscience is a false science that makes claims based on faulty or nonexistent scientific evidence and often characterized by contradictory, excessive claims, etc. These types of Pseudoscientific beliefs are common due to widespread "scientific illiteracy among different societies.
1. white guys cant jump like black guys therefore white guys shouldn't play basketball 2. men are stronger than women so men should weight lift 3.football is a manly sport therefore woman should not play it
*hope this helps(these are just examples I am not expressing my beliefs