Philip K. Dick predicts the future

From 1981:

1995: Computer use by ordinary citizens (already available in 1980) will transform the public from passive viewers of TV into mentally alert, highly trained, information-processing experts

2010: Using tachyons (particles that move backward in time) as a carrier, the Soviet Union will attempt to alter the past with scientific information.

That is from The Shifting Realities of Philip K. Dick: Selected Literary and Philosophical Writings, edited by Lawrence Sutin.