Tootfinder

GPT-5 review: GPT-5-Thinking is a substantial upgrade over o3, Auto is only useful for free tier users, picking the right model still matters, and more (Zvi Mowshowitz/Don't Worry About the Vase)
https://thezvi.substack.com/p/gpt-5s-are-alive-synthesis

GPT-5s Are Alive: Synthesis
What do I ultimately make of all the new versions of GPT-5?

Keine Redaktion, kaum Kontrolle, dafür prozentuale Beteiligung an allem – auch an Propaganda. Romantische Erzählung vom freien Netz trifft auf die Realität: Wer alles zulässt, verkauft auch das, was der Demokratie schadet.
Michael Hanfeld in der #FAZ (€) über #Substack -

Newsletter: Wer steckt hinter der Plattform Substack?
Die Newsletter-Plattform Substack hat zahlreiche prominente Autoren abgeworben und gilt als das nächste große Ding der Medienszene. Dahinter stecken Investoren aus dem Silicon Valley. Was ist ihr Interesse?

High-resolution luminescence spectroscopy of CaWO$_4$:Ho$^{3 }$: Sensitive detection of internal strains, temperature, and magnetic field
M. N. Popova (Institute of Spectroscopy, Russian Academy of Sciences), M. Diab (Institute of Spectroscopy, Russian Academy of Sciences, Moscow Institute of Physics and Technology), N. N. Kuzmin (Institute of Spectroscopy, Russian Academy of Sciences), K. A. Subbotin (Prokhorov General Physics Institute, Russian Academy of Sciences), A. I. Titov (Prok…

High-resolution luminescence spectroscopy of CaWO$_4$:Ho$^{3+}$: Sensitive detection of internal strains, temperature, and magnetic field
We carried out high-resolution (0.02 cm-1) measurements of the photoluminescence (PL) spectra of CaWO4:Ho3+, including in magnetic field, and performed spectra modeling. Well-resolved hyperfine structure was observed in the luminescence spectra of CaWO4:Ho3+ for the first time. Energies of several crystal-field levels were specified, g-factors were determined. Variations of a magnetic field as small as several tenths of mT can be detected from the PL spectra. We show that the PL spectra are muc…

1/N Paras tänä vuonna lukemani artikkelikokoelmakirja sivistyksestä on tuore Sivistyksen vuoksi (toim. Janne S. Kotiaho, Sanna Karkulehto, Kyösti Isokulju & Helmi Jyrkkänen). Sivistys on tietysti ajankohtainen, koska se on poliittisten toimien kohteena, vaikka se on ns. ainoa avain kestävyyteen.
Puolet kirjoittajista mainitsee J. V. Snellmannin suomalaisen sivistyskäsityksen isänä.

It should surprise no one that AI watermarking is not going to work.
#ai

AI Watermark Remover Defeats Top Techniques
UnMarker targets AI image watermarks with precision. Find out how it scrambles security and what it means for the future of AI images.

Conditional non-linear stability of Kerr-de Sitter spacetimes in the full subextremal range
Peter Hintz, Oliver Petersen, Andr\'as Vasy
https://arxiv.org/abs/2508.06620 http…

Conditional non-linear stability of Kerr-de Sitter spacetimes in the full subextremal range
We show the stability of Kerr-de Sitter black holes, in the full subextremal range, as solutions of the vacuum Einstein equation with a positive cosmological constant under the assumption that mode stability holds for these spacetimes. The method is similar to the (unconditional) proof in the slowly rotating case by Hintz and Vasy. The key novelties are the implementation of constraint damping in the full subextremal range as well as the verification of a subprincipal symbol condition at the tr…

Substack co-founder Hamish McKenzie is launching a biweekly column on Lachlan Cartwright's Breaker, a publication hosted on Substack rival beehiiv (Emily Sundberg/Feed Me)
https://emilysundberg.substack.com/p/one-of-substacks-founders-is-writing
…

One of Substack's founders is writing on beehiiv.
Good day to be the CEO of beehiiv.

Despite hype and optimistic projections, the humanoid robot industry faces hurdles, from battery life and design to limited demand for large-scale deployments (Evan Ackerman/IEEE Spectrum)
https://spectrum.ieee.org/humanoid-robot-scaling

Humanoid Robots: The Scaling Challenge
​It takes more than building a humanoid robot to build a humanoid robot product.