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.
When you drink non-homogenized milk, your system absorbs native milk-fat globule membrane (MFGM) proteins. These are normally digested in the stomach or gut. However, homogenization decreases the size of milk-fat globules, making caseins the main protein fraction that the body absorbs.