WorldToken
WorldToken demonstrations

Watch how memory changes the robot’s behavior.

The robot must rearrange three colored blocks through a sequence of swaps and press a button after each rearrangement. To finish, it needs to keep track of what it has already done.

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Use Play all to start the five videos together. You can change the playback speed using the menu above.

The robot can look back further in some videos than in others.

5 videos

All five videos use the same model and starting scene. The only difference is how much of the past the robot can see. Watch how this changes its ability to complete the sequence.

Simulated time 0:00

The robot can look back about 8 seconds.

The robot does not complete the sequence.

The robot can look back about 15 seconds.

The robot does not complete the sequence.

The robot can look back about 31 seconds.

The robot does not complete the sequence.

The robot can look back about 69 seconds.

The robot completes the sequence.

The robot can look back about 146 seconds.

The robot completes the sequence.

The robot can continue rearranging blocks for many minutes.

1 video

In this longer recording, the robot continues after its first success. It performs 31 correctly ordered swaps over more than 14 minutes.

Watch the robot keep going.

This video shows the full recording. You can increase the playback speed to watch it more quickly.