Guide
Three questions
Jev’s author defines Jev as System One. Psychologists Keith Stanovich and Richard West introduced in 2000. System 2 is the counterpart.
The two systems are two ways a mind handles information.
- runs automatically, quickly, and with little effort: reading a sign, reading a face, dodging a hazard.
- System 2 spends attention on effortful work: logic, hard arithmetic, and deliberate choice.
An LLM system spends its effort on heavy reasoning. Jev is aimed at the fast reaction.
A very fast browser
The classic task is looking up a flight. The page below is a small site: open the search page, choose origin, destination, and date, then click search. Start, and Jev looks up Zürich to London.
Flights
Look up a flight.
Obstacle avoidance
A 64×64 simulated world. Jev drives the car from the start to the goal, avoiding pedestrians and obstacles, and obeying the traffic lights.
Jev receives a reward on every step: +1 closer to the goal, −1 farther, −0.5 into a blocker, and +10 on arrival. That score is kept out of Jev’s context, so the final score is how we evaluate the run.
to goal — · step 0/160 · reward 0 · tick 0