Library

2,548 published verifications avg. score 5.6/10 1,246 rated true or mostly true 1,065 rated false or mostly false

“Scientific studies report an association between CYP2C19 genetic variants and major depressive disorder, longer depressive episodes, and greater depressive symptom severity.”

True

Published studies do report these associations. Systematic reviews and several primary studies describe links between CYP2C19 variants and depression risk, longer episodes, or greater symptom severity, even though results are mixed overall. The claim stays within what the evidence supports because it says studies report an association, not that the association is proven or universal.

“Genetic variants in the CYP2C19 gene that reduce CYP2C19 enzyme activity can contribute to relatively treatment-resistant depression by reducing the metabolism of some antidepressant medications.”

Mostly False

Reduced-function CYP2C19 variants do slow the metabolism of some antidepressants, but the best evidence does not show that this usually causes antidepressants to be less effective. These variants are more consistently associated with higher drug levels and more side effects, sometimes alongside equal or better remission. They can contribute indirectly to harder-to-treat depression through intolerance or discontinuation, but that is not the main or best-supported pattern.

“Adopting generative AI tools increases employee productivity in companies by at least 10%.”

Mostly False

The evidence does not support a broad claim that adopting generative AI reliably increases employee productivity by at least 10% across companies. Strong studies do show gains above 10% in specific tasks such as customer support, writing, and some coding workflows, especially for less-experienced workers. But effects vary widely by role and implementation, some studies find no gain or even slower performance, and firm-wide productivity improvements are not established at that threshold.

“The use of generative AI tools and trust in them has had a negative impact on non-fiction book sales.”

Mixed

Evidence shows AI-associated nonfiction tends to face lower trust and lower willingness to buy, which likely hurts some sales. But the available record does not establish a verified, market-wide drop in nonfiction book sales caused by generative AI. The strongest direct sales example is a single author case with major confounding factors, so the broad causal claim goes beyond what the best evidence proves.

“The European Union is planning to require AI-based scanning of all users' messages on private messaging apps such as WhatsApp.”

Mostly False

The claim exaggerates both the current EU position and the scope of the proposal. An earlier Commission draft did contemplate detection orders that critics said could lead to chat scanning, but later Council and Parliament positions rejected blanket scanning and moved away from mandatory scanning of encrypted messaging. The evidence does not support a current EU plan to scan all users’ private messages on apps like WhatsApp.

“More than 35% of people in Bulgaria smoke tobacco.”

Mostly True

The best available evidence indicates Bulgaria’s smoking prevalence is above 35% if “smoke tobacco” means current smoking, including non-daily smokers. Several authoritative sources put current smoking around 36-37%, while lower figures near 29% refer to daily cigarette smoking only. The claim is directionally accurate but imprecise about the metric and population measured.

“Russia won a legal case in The Hague concerning Crimea and the Sea of Azov.”

Mixed

The statement overstates a mixed ruling. Russia benefited because the tribunal rejected much of Ukraine’s case and awarded no damages, but it also found Russia violated parts of maritime law. The Hague arbitration did not recognize Russia’s sovereignty over Crimea or endorse exclusive Russian control over the Sea of Azov.

“During the lifetime of Muhammad, Islam spread among multiple tribes across the Arabian Peninsula.”

True

Reliable historical sources support that Islam expanded beyond Mecca and Medina to multiple tribes across the Arabian Peninsula before Muhammad’s death in 632. Some tribal acceptance was likely political or nominal, and not every tribe converted, but those caveats do not change the core point that the religion spread widely during his lifetime.

“If a crime victim or suspect is unknown or not registered in a law-enforcement DNA database, biological evidence from the crime scene will never be considered in the investigation.”

False

The claim is directly contradicted by standard forensic practice. Crime-scene biological evidence is routinely collected, analyzed, and used even when the victim or suspect is unknown or not in a law-enforcement DNA database. A missing database match may limit immediate identification, but it does not make the evidence irrelevant: it can link cases, be stored for future matches, and generate other investigative leads.

“Forensic genetic genealogy can generate investigative leads by linking a crime-scene DNA sample to biological relatives using genealogy records.”

True

Authoritative sources describe forensic genetic genealogy exactly this way: crime-scene DNA can be compared against genealogy databases to find biological relatives, and genealogical records can then be used to build family trees and generate investigative leads. The claim is accurate as a statement of capability, though the method does not by itself prove identity or guilt.

“Before arresting a suspect identified through familial DNA searching, investigators are required to obtain and test the suspect's own DNA to confirm an exact match.”

Mostly False

The evidence does not support a universal rule that police must confirm a familial-DNA lead by testing the suspect’s own DNA before any arrest. Confirmatory testing is widely recommended and may be required by particular policies or for evidentiary use in charging or court, but arrest authority generally depends on jurisdiction-specific probable-cause standards. The claim overstates guidance and practice into a blanket legal requirement.

“Familial DNA matching cannot be the sole evidence used to establish probable cause for an arrest warrant.”

True

Available legal and policy sources support the claim’s practical meaning: a familial DNA hit is an investigative lead, not standalone probable cause for arrest. Federal guidance explicitly bars arrest based only on a genetic association and requires confirmatory STR testing. Although local rules can vary, the record does not show a sound basis for using an unconfirmed familial match alone to justify an arrest warrant.

“Scientific studies show that the risk of misidentification from partial DNA matching in familial DNA searching is very low.”

Mostly False

The claim overstates what the literature shows. Some studies do find extremely low false-positive rates for one narrow error type: unrelated people being flagged as close relatives under strict methods. But familial searching also produces meaningful misidentification risks in other important scenarios, especially confusing distant relatives with first-degree relatives, so the blanket “very low” characterization is not supported.

“Polymarket is legal in the United States.”

Mixed

The claim overstates what the evidence supports. A CFTC-regulated U.S. venue branded as Polymarket US can now lawfully offer certain event contracts, but that does not make Polymarket broadly legal nationwide. Polymarket’s earlier U.S. operations were sanctioned as illegal, the main Polymarket.com platform still blocks U.S. users, and state gambling laws can still prohibit access.

“Regulation 75 of the United Kingdom Payment Services Regulations 2017 states that a payer is protected when a payment was made because the payer was deceived or induced into making it, regardless of whether the payment was authorized.”

False

The claim is not supported by the statute or by authoritative interpretation. Regulation 75 does not say a payer is protected whenever deception or inducement led to a payment; it addresses proof of authentication and execution in disputes about unauthorised or incorrectly executed transactions. Payments induced by fraud are generally still treated as authorised under the PSRs, which is why separate APP scam reimbursement rules were later introduced.

“Financial Ombudsman Service guidance says that deception (being tricked into authorising a payment) is the key factor when assessing protection or reimbursement for authorised payments, rather than whether the payer pressed a 'confirm' button.”

Mostly True

FOS guidance substantially supports this claim. In authorised-payment scam cases, the Ombudsman focuses on whether the customer was misled or deceived into making the payment, not simply on the fact that the customer technically authorised it by pressing confirm. However, reimbursement is not determined by deception alone; FOS also considers the firm's warnings, checks, and the overall circumstances.

“Synanon was founded by Charles Dederich in California in 1958 as a rehabilitation program.”

True

The historical record strongly supports this statement. Multiple independent sources agree that Charles Dederich founded Synanon in California in 1958, and they consistently describe its original purpose as addiction rehabilitation or treatment. Differences in wording, such as “therapeutic community” or “voluntary association,” do not change the core fact.

“The leadership of Synanon required some members to undergo vasectomies, broke up marriages, and reassigned partners.”

True

The historical record supports this description of Synanon’s leadership practices during its cult phase. Multiple independent sources report that Charles Dederich ordered or coercively imposed vasectomies on some male members, broke up marriages, and reassigned partners. The claim is accurately framed because it refers to some members rather than all members.

“Synanon stockpiled weapons and became increasingly isolated due to lawsuits.”

Mostly True

The claim is broadly supported, but its causal wording is too narrow. Strong sources show Synanon did stockpile weapons and did grow more isolated in its later years. However, that isolation was not caused by lawsuits alone; it also reflected negative publicity, investigations, tax problems, and Synanon’s own increasingly controlling internal culture.

“Residents of Synanon were instructed to focus on themselves and to avoid caring for personal relationships that were viewed as hindering sobriety or self-improvement.”

Mostly True

The historical record shows Synanon systematically subordinated family and intimate ties to its recovery program and group control. Multiple reliable sources describe no-contact rules, forced divorces, communal child-rearing, and pressure against relationships seen as obstacles to sobriety or self-improvement. The main caveat is wording: the evidence better supports restricting and reshaping relationships than a blanket instruction not to care about any personal relationship.