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.
The impact of these factors on mammary function is evident from the known effects of frequency of milk removal on milk yield, the effects of galactopoietic hormones on milk secretion, and the effects of milk stasis-induced mammary involution on mammary function.