Precog3How it worksWhat it buildsQuestionsSign inCreate an account

Precog3 reads your course material and measures what you actually know, concept by concept.

It names the belief behind each mistake, and rebuilds the plan against the exam date.

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What happens after you upload

timings from a 340-page thermodynamics course
1It reads the materialLecture slides, textbook chapters, your own handwriting, past papers and mark schemes.PDF, DOCX, PPTX, images and plain text. 340 pages parsed in 4 min 20 s.
2It extracts the graphEvery concept the material teaches, and every prerequisite link between them, traced back to the page it came from.62 concepts, 8 topics, 118 prerequisite links, each with a source page.
3It measures youQuizzes, flashcards and spoken teach-backs produce three separate readings on every concept.Mastery, coverage and retention, held per concept and re-read after every session.
4It names the beliefWhen one candidate belief explains several mistakes across different concepts, it is entered in your register with its evidence.7 beliefs currently held, from 91 marks dropped since 21 Jun.
5It schedules the repairThe plan is rebuilt every night against the graph, your retention curves and the exam date.6 sessions today, 38 min, ordered by what they unblock.

The graph it built from those 340 pages

the Topics screen itself, rendered here, not a picture of itOpen the full screen
TopicExtracted fromConceptsMasteryDueLast studiedStatus
Kinetic theory of gasesCallen ch. 1, lectures 1 to 4982%016 NovStrong
First law and heat enginesCallen ch. 2 to 3, lecture 5874%317 NovDeveloping
Entropy and the second lawSchroeder §4.1 to 4.6, lectures 6 to 91146%12todayWeak
Boltzmann entropy, S = k ln WSchroeder §4.4, pp. 118 to 12434%411 NovBlocked
Clausius inequalitySchroeder §4.2, lecture 7 slides41%2todayWeak
Carnot cycle and maximum efficiencyCallen ch. 4 p. 91, paper 2024 Q378%017 NovStrong
Thermodynamic potentialsCallen ch. 5, lecture 10758%614 NovDeveloping
Bose-Einstein and Fermi-Dirac statisticsSchroeder ch. 7, lectures 12 to 13923%09 NovWeak
Transport and fluctuationsSchroeder ch. 8, lecture 1440%0NeverUntouched

The 34% row is blocked rather than weak because the engine can see what holds it: Microstates and multiplicity, at 46%, sits under it and under three others, so repairing one thing lifts four.

The register of what you currently believe that is wrong

also the real screen, with the row actions it has in the appOpen the full screen
Belief, in your wordsLatest evidence for itStill held3-wk trendContaminatesObservedRepair 
“Reversible” means “frictionless”“nothing rubs, so no waste heat”78%↑ 21 pts2 concepts4 of 6, today2 of 4 done
“Entropy is disorder”“the gas just looks more spread out”62%↑ 9 pts4 concepts5 of 9, 11 NovQueued
“Clausius applies to any path”“∮δQ/T = 0 for any cycle”54%↑ 4 pts3 concepts3 of 7, 14 NovNot started
“Temperature ratios in Celsius”“1 − 27/127, so 79%”39%↑ 12 pts2 concepts2 of 5, 17 NovQueued
“Free energy is stored energy”“the energy held in the bond”36%↓ 8 pts2 concepts2 of 6, 2 NovRepaired 7 Nov
“W is a probability”“W has to sit between 0 and 1”31%↓ 14 pts2 concepts2 of 9, 28 OctWatch

None of those sentences was typed in by the student: each was inferred from answers, each opens its own evidence trail, and any row can be disputed, which stops it affecting the schedule until it is resolved.

The rest of the workspace

thirteen more screens, all reading from the same graph and the same register
ReaderLearnFlashcardsQuizTeach-backChatCalendarMock examExam autopsyDiagnosticsForecastProgress

Questions people actually ask

Does it work with my course, or only with courses you support?Only with what you upload. There is no catalogue, so the graph carries your lecturer's ordering and notation, and two students on the same module get different graphs if they upload different material.
Can it be wrong about me?Often enough that the interface is built around it. Every belief shows its confidence and its evidence, and every row can be disputed or dismissed.
Is my material used to train a model?No. Your uploads build your graph and nothing else, and deleting a file removes its concepts, its cards and its extracted text in the same action.
What happens in the last two weeks before the exam?New concepts stop being introduced eleven days out, spaced review is compressed, and the remaining hours go to the concepts that gate the most marks on the paper you uploaded.
Do I have to do it the way it tells me?No. Every session states the reason it was scheduled, and you can reorder, skip or delete it. Skipping is a signal too.

Point it at one course and read what it says about you.

Create an accountSign inTakes about two minutes. Bring one PDF.