Year: 2026

purpose-built apps do not outperform generic ChatGPT

purpose-built apps do not outperform generic ChatGPT

Meta-analyses consistently indicate that mental health chatbots alleviate symptoms of both anxiety and depression. Although an effect size hovering around 0.3 remains modest within this academic field, it is nonetheless tangible. The core issue surfaces upon reviewing individual clinical trials one by one. Specifically, when a specialized therapy application was pitted against standard ChatGPT, the dedicated app failed to surpass the generic bot across any evaluated metric. Meanwhile, a six-week study tracking 540 participants revealed that the artificial intelligence variant boosted interaction frequency by 2.4 times and engagement duration by 3.8 times, yielding symptom reduction comparable to traditional static workbooks.…
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Comparing analyst forecasts with naive and machine learning models

Comparing analyst forecasts with naive and machine learning models

Analysts' long-run earnings growth forecasts are less accurate than a naive model that simply predicts zero growth. That is not a provocation: it is the literal conclusion of an evaluation published in an accounting and finance journal. And there is more: the random walk beats analysts over long horizons and in small firms, and a naive extrapolation of their own one-year forecast is more accurate than their explicit two- and three-year forecasts. At the same time, the comparison with machine learning models concludes that analysts remain superior to the linear models actually in use. This article sets out what has…
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Understanding home bias and its impact on global portfolios

Understanding home bias and its impact on global portfolios

In 2016 the United States accounted for 56 % of world stock market capitalisation, so a US investor holding the market portfolio would have 44 % in foreign equity. The actual share was 23 %. Home bias is the most persistent phenomenon in international investing, and it has survived three decades of attempts to explain it. But there is a less quoted reading: it may not be entirely a mistake. This article goes through what has been measured, including the part suggesting that investing close to home sometimes pays.Summary: the seven findings that matterEach row names the study and the…
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Do free museums bring more visits or just more frequent visits from regular guests?

Do free museums bring more visits or just more frequent visits from regular guests?

In 2001 the United Kingdom abolished admission charges at its national museums, and in 2002 the department announced 62% more visits in seven months. It stands as one of the most successful cultural policy figures of recent decades, frequently referenced whenever free admission becomes a topic of discussion globally.What almost never accompanies that figure is the question a market researcher asked himself the moment he read it, and which turned out to be the decisive one: were a lot more people visiting museums, or were the same people visiting more often? The survey he ran to find out showed that,…
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Analyzing three major studies on AI use in colonoscopy detection rates

Analyzing three major studies on AI use in colonoscopy detection rates

In August 2025, The Lancet Gastroenterology & Hepatology published a finding that travelled the world: at four Polish centres, endoscopists who had spent months working with AI-assisted detection found fewer adenomas when performing a colonoscopy without it. The rate fell from 28.4% to 22.4%. Four months later, a Norwegian prospective trial with 5,013 colonoscopies and three phases found exactly nothing: neither loss nor gain of skill when the tool was withdrawn. And a third study, over three years, found sustained improvement. This article sorts out a scientific controversy that is live right now, and explains what separates the three designs.The…
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The limits of long-term economic benefits from hosting the Olympic Games

The limits of long-term economic benefits from hosting the Olympic Games

There are two figures in circulation about the Olympic Games and both deserve examination. The first is the cost overrun: a frequently cited University of Oxford study put the average deviation from Olympic budgets between 1960 and 2012 at 179% in real terms and 324% in nominal terms. The second is the benefit: the economic boost that justifies the bid.What makes this case interesting is that both have been challenged with data. A re-analysis published in 2022 could not replicate the Oxford study's results for the period 2000-2016 and obtained cost overruns of 13% to 178% on direct investments, noting…
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Truist supports Charlotte’s A Home for All initiative with 0,000 funding

Truist supports Charlotte’s A Home for All initiative with $450,000 funding

Truist's charitable fund will contribute $450,000 to A Home for All, the initiative Mecklenburg County, North Carolina, uses to coordinate government, businesses and nonprofits to prevent and reduce homelessness in the Charlotte area. The bank announced the grant on Oct. 29 in a press release, alongside a volunteer day with other local companies.Truist notes that the funds will facilitate stable housing connections for a broader population, bolster prevention initiatives, and expand resource accessibility to help vulnerable individuals maintain their residences.More people living unshelteredThe county's most recent official Point-in-Time count, conducted on the evening of Jan. 21, 2026, documented 2,018 individuals…
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State Grid’s programs to minimize power network impact on wildlife revealed at COP17

State Grid’s programs to minimize power network impact on wildlife revealed at COP17

State Grid Corporation of China, the country's state-owned power grid company, presented three programs on Oct. 29 in Yerevan, Armenia, that it says protect birds and habitats along its network. The presentation took place at a China Corner side event at the 17th Conference of the Parties to the Convention on Biological Diversity (COP17), where a report series on biodiversity conservation by Chinese companies was launched featuring the company as a case study, according to its press release.COP17 ran from Oct. 19 to 30 and was the first global review of progress toward the Kunming-Montreal Global Biodiversity Framework, adopted in…
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Avian influenza death in Washington is third human case linked to 2024 outbreaks

Avian influenza death in Washington is third human case linked to 2024 outbreaks

A patient in Yakima County with pre-existing medical conditions has become the initial fatality linked to avian influenza nationwide this year. Public health authorities are keeping track of individuals who had close exposure, noting that the threat to the general population stays minimal.A Yakima County resident who caught avian influenza from infected dairy cattle has died, the Yakima Health District announced on Sunday, November 1. The death is the first from bird flu in the United States this year and the third since human infections tied to the current animal outbreaks began in 2024, according to CNN.The district withheld the…
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New outer solar system body 2026 ED138 may qualify as dwarf planet

New outer solar system body 2026 ED138 may qualify as dwarf planet

The object, 2026 ED138, could be one of the largest bodies known in the outer solar system, but its size and status still need confirming.The NSF–DOE Vera C. Rubin Observatory has found its first candidate dwarf planet: an icy body orbiting the Sun beyond Neptune, currently about 46 times farther from the Sun than Earth is. The object, provisionally designated 2026 ED138, was announced on October 27 by the observatory and the International Astronomical Union's Minor Planet Center.Its exact dimensions remain undetermined. Should the highest projections prove accurate, this object will count as one of the most massive entities ever…
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