Original sentence: Some regard body piercing as a kind of artistic expression, others as a form of sexual expression and/or stimulation; however many still consider body modification to be a sign of non-conformity.This can at time lead to prejudice and cognitive bias towards those with piercings or visible signs of past piercings
Edited sentence: ) or tattoo that one should ideally be financially self-supporting for at least a few years (the longer the better) because it is normal for radical changes in whom one's friends are and what one's interests are.For example, a qualified teacher was not offered a job partly because the interviewers were passing notes commenting on the dimple in his tongue that surely was from a piercing (and it was assumed that piercing is only suited for “one kind of person”).It is often recommended that before getting any visible piercing other than a conservative/traditional (ladies only) ear piercing, and/or navel piercing (people can see that dimple where the hole is/was, even in the tongue.Prejudice and Cognitive bias are two examples of why it may be best to wait on visible modifications until after one has a good job working with respecting people, before any permanent changes to appearance are made.Some regard body piercing as a kind of artistic expression, others as a form of sexual expression and/or stimulation; however most people still consider almost all kinds of body modification to be signs of non-conformity, and this can lead to acts of prejudice