Tootfinder

from my link log —
Simulating time with square-root space.
https://arxiv.org/abs/2502.17779
saved 2025-06-08 https://dotat.at/:/L…

Simulating Time With Square-Root Space
We show that for all functions $t(n) \geq n$, every multitape Turing machine running in time $t$ can be simulated in space only $O(\sqrt{t \log t})$. This is a substantial improvement over Hopcroft, Paul, and Valiant's simulation of time $t$ in $O(t/\log t)$ space from 50 years ago [FOCS 1975, JACM 1977]. Among other results, our simulation implies that bounded fan-in circuits of size $s$ can be evaluated on any input in only $\sqrt{s} \cdot poly(\log s)$ space, and that there are explicit prob…

Erster Mondrover aus rein europäischer Produktion vorgestellt
Das Unternehmen Venturi Space France will einen europäischen Mondrover bauen. Zunächst für die Wissenschaft, doch auch weitere Zwecke sind denkbar.

New theory proposes time has three dimensions, with space as a secondary effect
https://phys.org/news/2025-06-theory-dimensions-space-secondary-effect.html#google_vignette

Nobody likes my coffee :)

"Speak, thou vast and venerable head," muttered Ahab, "which, though
ungarnished with a beard, yet here and there lookest hoary with mosses; speak,
mighty head, and tell us the secret thing that is in thee. Of all divers,
thou has dived the deepest. That head upon which the upper sun now gleams has
moved amid the world's foundations. Where unrecorded names and navies rust,
and untold hopes and anchors rot; where in her murderous hold this frigat…

Beginning later this year, the NSF–DOE Vera C. Rubin Observatory will create the ultimate movie of the night sky,
repeatedly scanning the sky for a decade to create an ultra-wide, ultra-high-definition, time-lapse record of our Universe across space and over time.
The resulting dataset, called the Legacy Survey of Space and Time (LSST), will be the largest ever amassed for optical astronomy.
This enormous, all-purpose dataset will bring the night sky to life,
enabli…

Harvard Divinity School broke precedent
by refusing to publish a video of its commencement speech
after a speaker went off-script to call attention to the perilous conditions in Gaza.
“There are no safe zones left in Gaza after 600 days and 77 years of genocide,” said Zehra Imam,
who graduated from the Harvard Divinity School this spring and participated in the embattled Religion and Public Life program.
Imam, who is Muslim, was speaking with two other students f…

A Harvard Commencement Speaker Mentioned Gaza. The School Refused to Publish Her Speech.
Divinity School insiders said Harvard’s practices are at odds with the public perception that the university is fighting Trump.

The first amendment is measurably under attack in ways it has not been since the presidency of Richard Nixon.
A double standard has also emerged:
if you protest, criticize, or publicly object to the president’s agenda, you’re a target.
Katherine Jacobsen, the project coordinator for the Committee to Protect Journalists in the US, Canada and Caribbean region, said:
“The thing with the first amendment and free speech in general is that you have to respect everyone’s rig…

Words like “prowess” and “tapestry,”
which are favored by ChatGPT,
are creeping into our vocabulary,
while words like “bolster,” “unearth,” and “nuance,”
words less favored by ChatGPT,
have declined in use.
Researchers are already documenting shifts in the way we speak and communicate as a result of ChatGPT
— and they see this linguistic influence accelerating into something much larger.

You sound like ChatGPT
AI isn’t just impacting how we write — it’s changing how we speak and interact with others. And there’s only more to come.