Library.

“Multitasking reduces productivity.”

The claim is well-supported by robust scientific evidence. Research from the APA, NIH, Stanford, and peer-reviewed experimental studies consistently shows that what people call "multitasking" — rapidly switching between tasks — imposes measurable cognitive costs, increasing errors and reducing output by an estimated 20–40%. While a tiny fraction (~2.5%) of people may be immune to these effects, and simple compatible tasks may not suffer the same penalties, the claim accurately reflects the strong scientific consensus for the vast majority of real-world work contexts.

“Vaccines contain ingredients that are harmful to human health.”

This claim is misleading. While it's true that rare allergic reactions to vaccine excipients (like gelatin or PEG) occur in roughly 1 per million doses, the unqualified statement implies vaccines are broadly dangerous. The overwhelming scientific consensus — including WHO, the CDC, the AAP, and a landmark study of 1.2 million children — confirms that vaccine ingredients like aluminum adjuvants and thimerosal are safe at the doses used, with no causal link to autism, neurological disorders, or systemic harm.

“Most human decisions are made unconsciously and are rationalized after the fact.”

Unconscious processes do influence many decisions, and post-hoc rationalization is a documented psychological phenomenon. However, the claim that "most" decisions are made unconsciously and rationalized afterward significantly overstates the evidence. Key neuroscience findings come from narrow lab tasks (e.g., simple button presses), not everyday decision-making. Critical peer-reviewed reviews warn that unconscious influence claims have been systematically inflated. The popular "95%" statistic lacks rigorous scientific backing. The claim contains a real kernel of truth but its sweeping framing is not supported.

“The 10,000-hour rule reliably predicts the attainment of expertise in a given field.”

The 10,000-hour rule does not reliably predict expertise. Meta-analyses show deliberate practice explains only 18–26% of skill variance across domains. Individual variation is enormous — chess masters have achieved mastery in as few as 3,016 hours while others never reached it after 25,000+. The "rule" is a popularized oversimplification of one violinist study's average, and its originator, K. Anders Ericsson, distanced himself from this framing. Genetics, instruction quality, and learning rates matter significantly.

“Consuming pineapple core around the time of embryo transfer increases the success rate of IVF implantation.”

There is no scientific evidence that eating pineapple core around embryo transfer increases IVF implantation success. Multiple fertility clinics and medical sources confirm no published human studies support this claim. The idea stems from bromelain's general anti-inflammatory properties, but theoretical plausibility is not proof of clinical benefit. The claim presents an unproven folk remedy as an established fact.

“Power posing significantly increases confidence and success.”

The best available evidence — including large pre-registered studies and meta-analyses — shows power posing produces a real but small effect on subjective feelings of power. It does not reliably change hormones, and behavioral or cognitive outcomes that would constitute "success" are weak or absent. The claim's use of "significantly" overstates the effect size, and pairing "confidence" with "success" implies downstream real-world benefits that the evidence does not support. The original 2010 findings have been substantially undermined by replication failures.

“It takes exactly 21 days to form a new habit.”

The claim that it takes "exactly 21 days" to form a habit is a widely debunked myth. The figure originated from a plastic surgeon's anecdotal observations in 1960, not from any scientific study. Multiple peer-reviewed studies and a 2024 meta-analysis show habit formation typically takes 59–66 days, with individual variation ranging from 4 to 335 days. Caltech researchers explicitly stated the 21-day estimate "was not based on any science." There is no fixed universal timeline for habit formation.

“Passive investing has a distorting effect on financial markets.”

The claim overstates what the evidence supports. While credible research — including from the Bank for International Settlements — identifies mechanisms through which passive investing can affect pricing and market dynamics, this evidence is largely conditional, model-based, or speculative. Counterevidence shows passive adoption can actually improve price efficiency. The blanket assertion that passive investing "has a distorting effect" presents an ongoing, nuanced academic debate as settled fact, omitting important qualifications about magnitude, market conditions, and competing findings.

“The majority of hedge funds deliver higher returns than passive index funds over time.”

This claim is not supported by the evidence. Multiple authoritative sources — including Preqin, Wharton research, and long-run S&P 500 comparisons — show that most hedge funds underperform passive index funds over time after fees. One source reports 10-year cumulative returns of 67% for hedge funds versus 300% for the S&P 500. The pro-hedge-fund evidence cited describes platform-specific or regime-conditional alpha, not majority outperformance across the hedge fund universe. Warren Buffett's famous 10-year bet against hedge funds further illustrates this pattern.

“A significant proportion of people share online articles without having read them.”

A major peer-reviewed study in Nature Human Behaviour, analyzing 56.4 billion Facebook shares, found that roughly 75% of news links were shared without the user clicking on them — strongly supporting the claim that "a significant proportion" of people share articles without reading them. However, the evidence primarily comes from one platform (Facebook, 2017–2020), and "shares without clicks" is a proxy for non-reading, not direct proof. The claim's broad framing slightly overstates what the data strictly demonstrates.

“Walking barefoot on grass enables the human body to absorb electrons from the Earth's surface.”

The core claim is physically plausible: the Earth carries a negative surface charge, and conductive barefoot contact can equalize electrical potential, transferring electrons to the body. Multiple peer-reviewed papers report measurable changes in body voltage during grounding. However, the supporting research comes from a narrow group of authors, uses small samples, and frequently hedges with speculative language. The magnitude and physiological significance of this electron transfer remain scientifically contested, and no large-scale independent replication has confirmed the mechanism's health relevance.

“Smartphones use their microphones to actively listen to users' conversations in order to serve targeted advertisements.”

No credible, independent evidence supports the claim that smartphones actively listen through microphones to serve targeted ads. The primary supporting evidence — a leaked CMG marketing pitch deck — was walked back by the company itself. Independent scientific studies, including a Northeastern University analysis of 17,000+ Android apps, found no unauthorized microphone activation. The "eerily accurate" ads people experience are well-explained by extensive metadata collection: location data, browsing history, app usage, purchase records, and cross-device tracking — no eavesdropping required.

“Screen time before bed has a negative effect on sleep quality.”

Multiple large-scale studies and meta-analyses consistently link pre-bed screen use with poorer sleep quality, shorter sleep duration, and delayed sleep onset in adults. A plausible biological mechanism (blue-light-mediated melatonin suppression) supports this association. However, the claim's blanket causal framing overstates the evidence: most supporting studies are observational and cannot prove causation, effects vary by age group (youth studies show weaker or null effects), and factors like content type and in-bed versus pre-bed use matter significantly.

“Intermittent fasting slows down human metabolism.”

The claim that intermittent fasting slows human metabolism is not supported by the scientific evidence. Multiple peer-reviewed studies from NIH, Harvard, and the Salk Institute show that standard IF protocols maintain or even increase resting metabolic rate and activate beneficial metabolic pathways like fat oxidation and AMPK signaling. The only scenarios where metabolism may temporarily dip involve prolonged or poorly structured fasting — not typical IF — and any reduction reverses upon refeeding. The claim presents an edge-case risk as a general rule.

“Airplanes are intentionally spraying chemicals into the atmosphere for the purpose of weather control or population manipulation.”

This claim is false. Every major scientific and governmental authority — including the US EPA, Met Office, WMO, and a survey of 76 out of 77 leading atmospheric scientists — has found no evidence of any secret aircraft spraying program for weather control or population manipulation. While legitimate, publicly disclosed geoengineering research (like cloud seeding and stratospheric aerosol injection studies) exists, these are transparent, small-scale activities — not covert operations via commercial aircraft. The "population manipulation" element has zero scientific basis.

“Current regulations prohibit the creation or distribution of AI-generated deepfakes depicting real people.”

This claim is false. While some laws target specific categories of deepfakes — particularly nonconsensual intimate imagery (UK criminal law, U.S. TAKE IT DOWN Act) and certain election-related uses — no jurisdiction has enacted a blanket prohibition on creating or distributing AI-generated deepfakes depicting real people. The EU AI Act primarily requires transparency and labeling, not prohibition. Many deepfake uses (satire, commentary, entertainment, consensual content) remain legal across most jurisdictions. The claim dramatically overstates the scope of existing regulation.

“Infertility is primarily caused by factors related to women rather than men.”

This claim is false. Medical evidence consistently shows that male and female factors each account for roughly one-third of infertility cases, with the remaining third involving both partners or unknown causes. The higher female infertility statistics sometimes cited reflect a well-documented surveillance bias—infertility has historically been tracked and diagnosed through women, leading to systematic underdiagnosis of male infertility. The WHO, NICHD, and multiple clinical sources confirm there is no basis for attributing infertility "primarily" to women.

“It is recommended to continue performing an exercise even if performance is reduced by half compared to the previous week, provided that other fatigue markers and performance on similar exercises are normal.”

This claim is misleading. While it's true that training can be maintained with large volume reductions (as in tapering protocols), those involve planned reductions, not unplanned 50% performance drops. An unexpected halving of performance on a specific exercise is treated in exercise science literature as a potential warning sign warranting investigation, load reduction, or rest — not routine continuation. The claim's conditional safeguards (normal fatigue markers, normal similar-exercise performance) add nuance but don't override the fundamental concern that an unexplained 50% drop demands caution, not a blanket recommendation to continue.

“Regular humming practice causes the human voice to become deeper.”

No credible peer-reviewed evidence supports the claim that regular humming permanently deepens the human voice. High-quality biomedical sources show humming improves vocal resonance, coordination, and quality — not baseline pitch. One controlled study found no significant effect on low-pitch frequency, and a humming-based training study actually found a slight pitch increase. Claims of deepening rely on conflating pitch range expansion with habitual pitch lowering, or misinterpreting temporary post-exercise effects as lasting change.

“GLP-1 receptor agonists produce net positive health outcomes that may exceed the negative side effects commonly highlighted in media coverage.”

The claim is largely accurate. Large clinical trials and meta-analyses consistently show GLP-1 receptor agonists deliver meaningful cardiovascular, metabolic, and weight-loss benefits that outweigh the predominantly mild-to-moderate GI side effects most often featured in media. However, the net benefit is patient-specific, not universal. Emerging signals — including a 29% increased osteoporosis risk and an unresolved thyroid cancer concern — represent real long-term harms beyond media-hyped complaints. Benefit magnitudes are modest (10–20% reductions for most outcomes), and GI side effects cause meaningful treatment discontinuation.