Read past the headline
Notice the pressures shaping a review
Selection bias arises when the people whose accounts appear are not representative of everyone involved. Recall bias can change details over time. Survivorship bias can make visible successes easier to find than difficult or adverse experiences. Marketing influence may affect which stories are requested, edited, amplified, or left out.
These are not accusations against an individual narrator. They are ordinary limits of self-reported evidence. A useful reading habit is to ask what population is missing, when the account was recorded, and whether an outside party had a reason to frame the story positively.
For a broader orientation to this topic, the site’s ibogaine treatment review verification guidance provides a practical lens for separating a reported experience from a verifiable fact. The definition of selection bias is also useful when a page presents only favorable experiences as if they represent a complete record.