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sweezyjeezy commented on Waymo robotaxi hits a child near an elementary school in Santa Monica   techcrunch.com/2026/01/29... · Posted by u/voxadam
koolba · 17 days ago
> Waymo said its robotaxi struck the child at six miles per hour, after braking “hard” from around 17 miles per hour. The young pedestrian “suddenly entered the roadway from behind a tall SUV, moving directly into our vehicle’s path,” the company said in its blog post. Waymo said its vehicle “immediately detected the individual as soon as they began to emerge from behind the stopped vehicle.”

As this is based on detection of the child, what happens on Halloween when kids are all over the place and do not necessarily look like kids?

sweezyjeezy · 17 days ago
These systems don't discriminate on whether the object is a child. If an object enters the path of the vehicle, the lidar should spot it immediately and the car should brake.
sweezyjeezy commented on Travel Is Not Education   fi-le.net/travel/... · Posted by u/fi-le
xutopia · a month ago
Having travelled the world I can say without a doubt that this person misses the point of travel.

It isn’t about winning a trivia night. It’s about connecting deeply on a level that a Wikipedia article just cannot offer.

sweezyjeezy · a month ago
The trivia approach doesn't even work for most people - ask the wikipedia reader and the person who travelled to Turkey about it a year later and see who has actually retained some knowledge.
sweezyjeezy commented on Using AI generated images to get refunds   wired.com/story/scammers-... · Posted by u/MattSayar
eru · a month ago
Division of labour is a good thing. It's why we are rich today.
sweezyjeezy · a month ago
That's a stretch. One can hold the view that division of labour is a useful economical principle, but also that oligopolies represent a dangerous concentration of power.
sweezyjeezy commented on Trump says Venezuela’s Maduro captured after strikes   reuters.com/world/america... · Posted by u/jumpocelot
aglavine · a month ago
1. Most people from Venezuela are happy Maduro is out. A striking difference with people from Ukraine about the invasion. This is the most important thing about this and most people here in comments ignore it.

2. Maduro wasn't even the president. He was someone who took the country illegally with cartel people.

3. Why? Maduro was smuggling drugs in USA. Huge operations. And I guess there must be geopolitical reasons. You want China and Russia be there? And people from Venezuela were the biggest migration wave in the World last decades. You want millions of refugees?

sweezyjeezy · a month ago
I think one of the best arguments against US interventionalism when it comes to tyrants is just how 'variable' (let's say) the outcomes have been over the years. For every Panama, there's two or three Guatamalas, Irans or most recently Iraq. Generally the hard part is not the removal of the head of state, which for the US is usually pretty quick. It's what beurocratic structures remain functional and whether the power vacuum created brings something better and more robust, or just decades of violence.

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sweezyjeezy commented on Koralm Railway   infrastruktur.oebb.at/en/... · Posted by u/fzeindl
monster_truck · 2 months ago
The rock they dug through for Koralm is, no hyperbole, about as bad as it gets. It's the gnarliest part of what's under the Alps and required them switching back and forth between boring and blasting.

Being two separate tunnels, it also needs twice as much excavation work. It's also ~25x deeper than Toei Oedo (4000ft vs 157ft). At 4000ft the rock itself is 45-50C!

sweezyjeezy · 2 months ago
It's also really hard to make the tunnel remain a tunnel over its expected 150 year lifespan - given that it basically runs through a fault line. They had to study and test local geology for about 15 years, build certain sections to expect some movement over time, as well as kit everything out with a lot of sensors.

Overall an amazing achievement, and unsurprising it took this long to figure out!

sweezyjeezy commented on The "confident idiot" problem: Why AI needs hard rules, not vibe checks   steerlabs.substack.com/p/... · Posted by u/steer_dev
rs186 · 2 months ago
We talk about "probability" here because the topic is hallucination, not getting different answers each time you ask the same question. Maybe you could make the output deterministic but does not help with the hallucination problem at all.
sweezyjeezy · 2 months ago
Exactly - 'non-deterministic' is not an accurate diagnosis of the issue.
sweezyjeezy commented on The "confident idiot" problem: Why AI needs hard rules, not vibe checks   steerlabs.substack.com/p/... · Posted by u/steer_dev
jqpabc123 · 2 months ago
We are trying to fix probability with more probability. That is a losing game.

Thanks for pointing out the elephant in the room with LLMs.

The basic design is non-deterministic. Trying to extract "facts" or "truth" or "accuracy" is an exercise in futility.

sweezyjeezy · 2 months ago
You could make an LLM deterministic if you really wanted to without a big loss in performance (fix random seeds, make MoE batching deterministic). That would not fix hallucinations.

I don't think using deterministic / stochastic as a diagnostic is accurate here - I think that what we're really talking is about some sort of fundamental 'instability' of LLMs a la chaos theory.

sweezyjeezy commented on Gemini with Deep Think achieves gold-medal standard at the IMO   deepmind.google/discover/... · Posted by u/meetpateltech
shiandow · 7 months ago
Section 2 is a case by case analysis. Those are never pretty but perfectly normal given the problem.

With OpenAI that part takes up about 2/3 if the proof even with its fragmented prose. I don't think it does much better.

sweezyjeezy · 7 months ago
It's not it being case by case that's my issue. I used do olympiads and e.g. for the k>=3 case I wouldn't write much more than:

"Since there are 3k - 3 points on the perimeter of the triangle to be covered, and any sunny line can pass through at most two of them, it follows that 3k − 3 ≤ 2k, i.e. k ≤ 3."

Gemini writes:

Let Tk be the convex hull of Pk. Tk is the triangle with vertices V1 = (1, 1), V2 = (1, k), V3 = (k, 1). The edges of Tk lie on the lines x = 1 (V), y = 1 (H), and x + y = k + 1 (D). These lines are shady.

Let Bk be the set of points in Pk lying on the boundary of Tk. Each edge contains k points. Since the vertices are distinct (as k ≥ 2), the total number of points on the boundary is |Bk| = 3k − 3.

Suppose Pk is covered by k sunny lines Lk. These lines must cover Bk. Let L ∈ Lk. Since L is sunny, it does not coincide with the lines containing the edges of Tk. A line that does not contain an edge of a convex polygon intersects the boundary of the polygon at most at two points. Thus, |L ∩ Bk| ≤ 2. The total coverage of Bk by Lk is at most 2k. We must have |Bk| ≤ 2k. 3k − 3 ≤ 2k, which implies k ≤ 3.

sweezyjeezy commented on Gemini with Deep Think achieves gold-medal standard at the IMO   deepmind.google/discover/... · Posted by u/meetpateltech
gyrovagueGeist · 7 months ago
Useful and interesting but likely still dangerous in production without connecting to formal verification tools.

I know o3 is far from state of the art these days but it's great at finding relevant literature and suggesting inequalities to consider but in actual proofs it can produce convincing looking statements that are false if you follow the details, or even just the algebra, carefully. Subtle errors like these might become harder to detect as the models get better.

sweezyjeezy · 7 months ago
100% o3 has a strong bias towards "write something that looks like a formal argument that appears to answer the question" over writing something sound.

I gave it a bunch of recent, answered MathOverflow questions - graduate level maths queries. Sometimes it would get demonstrably the wrong answer, but it not be easy to see where it had gone wrong (e.g. some mistake in a morass of algebra). A wrong but convincing argument is the last thing you want!

u/sweezyjeezy

KarmaCake day1844December 30, 2014View Original