The controller is described as:

a still-flat Disc [with] a BROWNISH STRIPE around the ring, like a coffee stain on white linen.

The controller is one of two disc items created by the Maker.

Purpose / Behaviour[edit | edit source]

It is discovered that the Controller, when it is in the proximity of a funnel stack, causes the funnel stack to collapse tightly, then launch into the air. Carter is the first to discover this behaviour.

With much apprehension a hand slowly brings the Controller closer to the Stack which now stands on a small ALTAR of random lumber. 
When it is within a couple feet, the Stack starts to go compact and as it gets closer, the collapsing speeds up...

Coloured Controllers[edit | edit source]

During scene 212, where the flowers become colour coded (green / red), and the flower limbs get rebuilt with alternating red & green flowers, the boys create new controllers that are also marked red & green.

Necklace[edit | edit source]

Later on in the screenplay, we see that the boys wear thin leather necklaces with the Controller(s) attached.

Alternate Method Of Control[edit | edit source]

Later, in scene 152 ,Euclid discovers that his stack of Funnels also response to Voice Command.

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