uFactories,
pronounced "nano-factories", are one of the inventions that change the world.
Once, communication devices -- radios and televisions, they were called -- had electric circuits that had no memory. Physical switches and capacitors were used to control the circuits. The next generation of communication devices used computer processors and memory to take the place of physical switches. With the computers, human speech can be spoken and understood by the communication devices. In this way, the devices became programmable, which means they could take on new functions without undergoing any physical change. But they were still limited in that they had a certain fixed number of processors, memory, etc. It wasn't until the invention of uFactories that this constraint was relieved.
The first constraint in the growth of communication devices was power. This was relieved by the invention of the anihilation catalyst.
With uFactories as a standard feature of all communication devices, there is essentially no constraint limiting the new functions they can take on. If additional processing speed is needed, the uFactory builds the necessary devices in-place. If raw materials are needed to complete the job, the communications device will signal the delivery truck to bring them. As you can imagine, the entire supply chain, from beginning to end, is fully automated by uFactory-powered devices.