✓london24 dec 1724
✓philadelphiaoct 1723
✓passy1784
benjamin-franklin.record
passy, 1784
where?
when?
sourced ✓
± 2
months

quofuit

find anyone, anytime.

explore history → see an example

100% local · every fact traces back to its source

the-march-of-humanity.mov
humanity marches across the world — on a loop, just like here
ask

ask the question — where? when?

type a name. the record opens instantly — wikipedia is already there, offline. every presence is dated, placed, and quoted word for word.

where was franklin in december 1724?
in london — ✓ documented presence, « We arriv'd in London the 24th of December, 1724. »
quofuit — benjamin-franklin
stay24 dec 1724 London✓ ai
residence1784 Passy, France✓ checks
arrivaloct 1723 Philadelphia✓ ai
match1936 Berlin✗ disputed
false facts are caught then hidden — never erased
aim

filter by date. aim for bingo.

give a precise day: the map tightens to ±2 months around it. if a presence lands exactly on your date — bingo, the gold ring lights up.

the-time-machine.mov
a name, a date, a button — the joy of landing right on target
cross

who else was there?

the crossings tab reveals people documented in the same place, in the same period — the fabric of paths that brush past each other through history.

who else was in paris in 1776?
2 presences overlap — each one sourced. but be careful…
correlation ≠ meeting. two presences in the same place don't prove they met.
crossings — paris, 1776
subject1776–1785 B. Franklin — Passy, Paris✓ ai
crossing1775–1778 P.-A. de Beaumarchais — Paris✓ checks
crossingapr–jun 1778 Voltaire — Paris✓ ai
presences that overlap — not meetings
zurich — 1916
Two historical figures cross paths on a Zurich street without recognizing each other, a presence pin above each of their heads
einstein and lenin lived in zurich at the same time. no source says they met — and neither does Quo Fuit.
the principle

a fact is never a guess.

field-notebook.txt

most tools blur what they know with what they guess.

Quo Fuit draws a clean line: a documented fact is never presented as a guess — and a guess never as a fact.

every presence shown carries its level of evidence, and traces back to its source in one click. the absence of a source is not a hypothesis: it is an absence.

documented fact

a person, a place, a date — indexed by a verifiable source. certain · sourced

correlation

two presences that overlap. a clue — never proof of a meeting. flagged as such

hypothesis

a possible deduction, labeled with its confidence — never slipped in among the facts. uncertain · shown

early access — no commitment, cancel in one click. secure payment by stripe.

where does the data come from?

offline wikipedia (44 gb), a gazetteer of 1.33 million places, and public-domain biographies. everything is on your machine — nothing leaves.

can an extracted fact be wrong?

yes — and that's why every fact passes through a cascade of deterministic rules then a local ai judge. whatever fails is hidden and marked « disputed », never presented as true.

is a co-presence a meeting?

no. two documented presences in the same place in the same period are a correlation. Quo Fuit will never say « they met » without a source.