P&IDs may be viewed as a database of equipment, devices, lines and various sundry items that make up a process plant. Like a properly designed database, the tagging method employed on P&IDs needs to be robust and extensible. This Part 4 reviews key considerations and presents techniques that can be applied.

Think about it. Everything else is wireless. Why do we need cables to provide our electricity? From TEDtalksDirector:

Imagine the traditional laboratory setting in an undergraduate engineering class. Now imagine the ability to remotely operate and manipulate lab equipment housed miles away in a central facility.

Multiple schools, no matter their physical location, could have access to these web-based experiments and incorporate it into their curriculum.