Process:  - Grapes are grown - A selection of grapes are gathered - The grapes are washed - The stems are removed from the grapes - The grapes are crushed and added to a fermation container - Yeast is added to the container - The yeast eats the sugar in the yeast, releasing alcohol -   Perturbation hypothesis: suppose food particles got into the jets happens, how will it affect less grapes are crushed.  Does the supposed perturbation have an effect (direct or indirect) on the process?

no