Having presented all the relevant nanoscale mechanisms, thus laying down a firm background for the readers' understanding, the author moves to the to… - Stephen F Bush

The advantage of molecular messaging over other sorts of communication, he says, is its ability to be deployed in hard-to-reach places, such as providing in-body communications for medical applications. The body's cellular signalling pathways have already been mapped, so these could serve as "communications channels", says Dr Bush. Digital signals could be sent, say, to the vagal system to help moderate a patient's blood pressure or heart rate. Data transmitted molecularly might also enable blood-sugar levels to be monitored without invasive pinpricks.

...understanding information entropy in the power grid per kilowatt of power delivered or the radio frequency communication power expended within the power grid per kilowatt of power delivered will be more valuable than understanding the detailed packet structure of a half-dozen supervisory control and data acquisition protocols.

No prior knowledge regarding quantum mechanics is expected, so one can find a really good introduction covering quantum states, measurement, entanglement together with other aspects of quantum networking, including such issues as security, teleportation, and channel swapping.