As you may know, stir fry actually takes some skill to do and this is most easily illustrated with fried rice. Beside the standard requirement of ingredient preparation and timing, it takes control skill and physical strength to correctly toss the rice under high heat.
Here is a video of the necessary control to toss the fried rice:
Here comes the invention of automatic tossing woks:
Now you can hire any high school students during the summer vacation to do this. Someone just need to standardize all the recipes and the timing.