Users create this software themselves and often overlook how important it is. In some types of embedded systems, the application software and the operating system software may be indistinguishable to the user, as in the case of software used to control a VCR, DVD player or Microwave Oven.
You can jam milk through pretty small holes with force like that. Before homogenization, fat globules range in size from 1-10 microns (a micron = ~0.00004 inch). After, the size range is reduced to 0.2-2 microns.
One of my tricks with homogenized milk is to start with a milk that has a low fat percentage, like a 1% or 2%, and then add the best commercial cream I can find to bring the fat content up to 3-4%. This has always set better for me than using regular whole milk.