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.
Homogenization is a more recently invented process and it has been called the worst thing that dairymen did to milk.. When milk is homogenized, it is pushed through a fine filter at pressures of 4,000 pounds per square inch. In this process, the fat globules are made smaller by a factor of ten times or more.