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L train: Canarsie Tube closedRun the controller
Lexington Ave express suspendedRun the controller
A and C: Cranberry Street Tunnel closedRun the controller
Aisha's tripArchitect, uses a wheelchair
Dev's tripLine cook, breakfast service
Grace's tripParalegal, downtown
Kwame's tripBank operations lead
Lena's tripGraduate student
Maya's tripICU nurse, day shift
Sam's tripAnalyst, Financial District
Tomás's tripHigh-school teacher
HomeThe L closure, chapter by chapter
Control roomClose a line and watch the agents
RidersRemembered riders and their routes
MemoryFacts over time, episodes, handoffs
Agency brainWho owns it, who knows it, and why
ProofFalkorDB against NetworkX
Who owns the Myrtle-Wyckoff elevator outage?Ask the agency brain
Why do L tube bus bridges get 27% more buses?Ask the agency brain
Who knows the most about the G at Metropolitan Av?Ask the agency brain
What changed in the last 7 days?Ask the agency brain
Who it hitsriders by stops from the closure
Where they gothe G overload
What it can carrymax flow
The choke pointmin cut
The fixa shuttle tested on a fork
The ridersadvisories after approval
FalkorDB vs NetworkXmax flow on every closure
Many agents at oncetenant isolation under load
What each tool costsqueries and milliseconds
Data and assumptionsMTA sources
Every querythe Cypher behind every tool

Agency brain · Track 3

Who owns it, who knows it, and why we decided it.

The MTA's own records (every elevator and escalator with who maintains it, every outage its feed has listed, live service alerts and their history, rider complaints and accessibility projects) sit in one shared FalkorDB graph beside a sample agency's people, teams, documents, tickets, chats and decisions. Every answer cites the records it came from, with the published text and when it was read.

MTA records are real and labeled as such; the agency's people and their documents are sample data.

Ask the brain

Enter asks; Shift+Enter starts a new line.

Answer

Answers show here with numbered sources: the MTA records (each with its receipt: the published text, its source and when it was read) and the sample agency's documents, tickets, chats and decisions that each line came from. Pick a question above or ask your own; a follow-up like “when will it be back?” is read with the previous answer.

Add to the brain

Paste a chat message, a ticket or a note. The brain links it to the stations, lines and people it names. An elevator outage files a ticket with the team that maintains it and goes into memory, so step-free routes change; a fix resolves the ticket.

It is a