I think they are making an equivalence to digital files. With digital files, you can copy it over and keep the original. In his example, essentially the plumber

I think they are making an equivalence to digital files. With digital files, you can copy it over and keep the original. In his example, essentially the plumber only took a picture of the weed, handed the cops the picture, and took the weed home with him. At least that's how I interpreted it.