In a Noema, as components break, they get replaced with new equivalent components. The assumption is that components are breaking all the time though not so many break at any one time that the Noema ceases to function.
As more demand is placed on particular component groups, the Noema automatically grows to meet those demands. In some cases, this growth is pro-active where the usage patterns are anticipated in advance and appropriate components are established before the demand. This is in contrast to reactive growth where the components are not established until the demand already exists.