Question

but the true fruition of hawthornes vision may not come until the period from 2020 to 2050, when true artificial intelligent (ai) programs will finally be added to the net, capable of reason, common sense, and speech recognition. some call this the \fourth phase\ of computing, when we will be able to communicate with the internet as if it were an intelligent being. eventually, accessing the internet may resemble talking to the magic mirror of childrens fairy tales. instead of typing arcane codes and symbols into a web

Explanation:

The text discusses the addition of AI programs to the Net with speech recognition capabilities. The other options (the rise of the Internet and web navigators) are not the main trend highlighted here. The key focus is on the development related to speech recognition as part of the future of computing with the Net.

Answer:

speech recognition