The computer may never be so programmed; but the fact that it could is an essential fact about it, without which it would not qualify as a computer. The counterfactuals that matter to science and physics, so far neglected, are facts about what could or could not be made to happen to physical syst...

Rosa Parks, an active member of the civil rights movement, is best known for her act of refusal to give up her bus seat and comply with racists segregation policies. Her defiance helped to inspire the Montgomery bus boycott and propelled the civil rights movement.

Her w...

Penrose and Hameroff were met with incredulity. Quantum mechanical laws are usually only found to apply at very low temperatures . Quantum computers, for example, currently operate at around