Crossword Genius

Model needs encouragement, having wasted time (10)

Ross

I believe the answer is:

simulation

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'model' is the definition.
(I know that simulation is a type of model)

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for simulation that I've seen before include "Something appearing" , "Feigning" , "mimicry" , "copy" .)

I've seen this clue in The Guardian.
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