Will the leaderboard winner solve your problem?
A public score can shortlist models. A new version of your own task can reveal what the score misses.
Suppose you need a model to spot a useful clue in a fresh incident report. Which leaderboard measures that particular job?
Use rankings to choose what to try
Howard looks at a top-ranked model he has not tried. Public questions may require different skills from your work, and some may be present in training. A correct answer alone cannot distinguish recognition from a new solution.
these metrics are not particularly well aligned with real life usageReplay 59:39–1:00:04 →
Did people change, or did the task become more familiar?
A mile remains a mile, but cinders and synthetic tracks create different racing conditions. Epstein recalculates historical comparisons with an expert estimate for the surface effect. Flynn examines a different change: more practice with abstract classification and hypothetical reasoning in education and work. Keep the raw scores, then list the conditions and prior experience that may have shifted. An arguable conversion factor for tracks does not supply a universal adjustment for schooling.
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So I consulted biomechanics experts to find out how much slower it is to run on cinders than synthetic tracks, and their consensus that it's one and a half percent slower.Replay 3:25–3:34 →
So the tenor of education has changed. We are educating people to take the hypothetical seriously, to use abstractions, and to link them logically.Replay 8:37–8:47 →
Which sample produced the score, and what work did it miss?
Howard withholds bird and forest images, so a reader can identify exactly which labels the accuracy score covers. In AI coding, Denisov-Blanch notes that a commit can implement a feature or repair the one just broken, and complexity and codebase maturity affect the comparison. Keller's branch-prediction example adds a third boundary: gains flatten for one structure but another design can improve them. Before adopting a tool on scores alone, name the sample, the unit of work and the implementations actually compared.
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put aside some data for testing the accuracy of your modelReplay 45:27–45:32 →
returns the parent folder of a pathReplay 46:09–46:20 →
delivering more commits does not necessarily mean more productivityReplay 5:07–5:14 →
task complexity, code base maturity, language popularityReplay 17:37–17:44 →
one of the limits of computer performance is branch predictionReplay 3:11–3:14 →
drop the one kind of training array and put it in another oneReplay 3:37–3:42 →
What does a zero access count establish?
Hopper’s access counters replace a guess about use with observations. A zero supports a precise statement about a particular instrumented path during an interval. Deletion requires additional knowledge about rare incidents, audits and other access paths. The metric changes the decision while retaining its scope.
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Every time the record was looked at I added oneReplay 9:00–9:05 →
the data is our raw materialReplay 17:10–17:17 →
Which population is the replacement benchmark for?
Similar births per woman need not imply the same replacement conditions if survival to the next generation differs. A benchmark taken across countries or decades can hide differences in mortality and age structure. Separate the observed count from survey responses about desired children before turning a gap between them into a causal explanation.
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The replacement fertility rateReplay 1:10–1:15 →
because of higher mortality rates.Replay 1:20–1:27 →
Which outcomes go into a claim of technological stagnation?
When the interviewer asks for numbers distinguishing stagnation from dynamism, unpack “technology” into observable outcomes: time to complete a task, number of people served, energy use and maintenance. Different domains can move in opposite directions. Publish the sampled domains and weights, then recompute with another plausible weighting before drawing a single aggregate conclusion.
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what are their numbers for stagnation versus dynamismReplay 5:46–5:50 →
for technological innovation, economic dynamism.Replay 22:17–22:22 →
Does high performance in familiar conditions prove transfer?
In “The Expert Myth,” Derek Muller uses a chess-memory experiment to show that players recall familiar configurations from real games more easily; when pieces are placed randomly, chess expertise no longer gives the same memory advantage. In “Are Athletes Really Getting Faster, Better, Stronger?,” David Epstein discusses the difference between cinder and synthetic tracks and shows that applying a 1.5% track adjustment changes how many runners meet the sub-four-minute mile threshold. Both examples call for specifying task and measurement conditions: experts may benefit from familiar structures, and performance can depend on the environment. They are not the same experiment: chess recall measures domain-specific memory, while the track adjustment changes the conditions for comparing times. Do not generalize a score from one task into a claim of universal ability.
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At its core, expertise is recognition.Replay 16:22–16:24 →
a valid environment, many repetitions, timely feedback, and thousands of hours of deliberate practice.Replay 16:33–16:40 →
So I consulted biomechanics experts to find out how much slower it is to run on cinders than synthetic tracks, and their consensus that it's one and a half percent slower.Replay 3:25–3:34 →
So if you apply a one and a half percent slowdown conversion to every man who ran his sub-four mile on a synthetic track, this is what happens.Replay 3:34–3:43 →
A few more correct answers after a tone change: what still needs testing?
The earlier discussion treats a leaderboard as a trial list rather than a guarantee of useful work. The politeness paper brings that distinction down to a sentence: five sets of prefixes change the tested GPT-4o’s mean accuracy on the same 50 multiple-choice questions. Before translating this into “rudeness works,” inspect the setup. A tool generated the questions and answers, and tone rewrites also changed words and length. The paper acknowledges its small sample and leaves the mechanism uncertain.
For your own work, preserve the questions, answer keys, and rewriting conditions, then compare on an independent task set and check the keys. That tests whether a prompt variant repeatedly helps your task. It does not test whether the model feels offended, nor establish insults as a reliable general technique.
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This suggests
that the tone does matter.§ 4 Experimental Results and Analysis · PDF 第 3 页 →
the dataset size
is relatively small§ 6 Limitations · PDF 第 4 页 →
Selected as human 73% of the time: which capability was measured?
The earlier discussion separates a test, its prompt, and the intended use. The Turing-test paper supplies a different score: after chatting with a human and a machine simultaneously, which witness does a judge select as human? Persona-prompted GPT-4.5 is selected in 73% of pooled games; without that persona, its pooled win rate is 36%. The change concerns whom the model portrays and how it speaks, rather than a new mathematics question.
State the measured verb accurately: “more often taken for human in this five-minute text comparison” cannot directly become “more reliable reasoning” or “ready to replace a job.” The authors themselves distinguish humanlikeness from intelligence. Read alongside Howard’s warning about leaderboards, the next step is to list the ability you actually need and design tasks that separate it from style and persona, rather than seek one universal score.
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not a direct test of intelligence, but a test of humanlikeness§ 3.3 What does the Turing test measure? · PDF 第 10 页 →
did not robustly pass without the PERSONA prompt§ 3.1 Do Large Language Models Pass the Turing test? · PDF 第 8 页 →
Change a familiar question
Bubeck asks GPT-4 for a proof that there are infinitely many primes, with each line rhyming. Now you can inspect mathematical validity and the added constraint separately. One successful demonstration suggests a capability; it does not estimate its success rate.
we don't know what gpt4 was trained on I don't know what gpt4 was trained onReplay 17:35–17:49 →
For your incident report, hide the resolution and ask which log line to investigate first. Change one decisive line, agree on what should change with a colleague, and try again. Does the recommendation follow the evidence?