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A simulation stage where events enter together, stall politely, race dangerously, fork into futures, then return for replay.

observer pit

chalk: first synchronization pulse aligns the name

act ii

Queue

Restless intentions behind velvet rails.

ready queue / no actor owns the stage yetWAIT

timer queue / sandbags lower one by one122855

act iii

Two futures reach the same prop.

shared
prop

write

CANCELLED BRANCH

act iv

One cue duplicates into three choreographies.

cue

worker a begins before the baton fallsworker b inherits the tempoworker c leaves a ghost event

act v

The gate refuses drama until every token arrives.

sync barrier: four arrivals required

intertitle

Two suspended doors, each waiting for the other to open.

lock a

waits for b

lock b

waits for a

act vi

Prior runs remain as onion-skin frames behind the current tick.

run -3

run -2

run -1

now

what if two futures arrive together