The World is Getting Better

The facts are as follows. The rate of violent crime is lower now than it was at any time between 1966 and 2009. Immigrants have a lower rate of violent crime than American citizens. Terrorists kill just three-tenths of one percent of all American homicide victims. The rate of death from terrorism in the United States was higher in the early 1970s than it is today. And since 2002, more Americans have been killed by right-wing American terrorists than by Islamic terrorists. It’s true that the...

 Far-Right Rhetoric is Win-Win

As for those in the widening world of conservative media, for all of their complaints about the establishment, they are only too happy to acknowledge their influence in shaping the political agenda. “I don’t think conservative media is shaping it as much as it would like to, but it’s shaping it more than Washington would like it to,” said Deace. “I don’t think it’s moving fast enough for conservatives like myself, but it is clearly dragging the Republicans along, kicking and scr...

 The Shortest Route

For if as scientists we seek simplicity, then obviously we try the simplest surviving theory first, and retreat from it only when it proves false. Not this course, but any other, requires explanation. If you want to go somewhere quickly, and several alternate routes are equally likely to be open, no one asks why you take the shortest. The simplest theory is to be chosen not because it is the most likely to be true but because it is scientifically the most rewarding among equally likely altern...

 Physics Reduced to Probability

Philosophers have said that if the same circumstances don't always produce the same results, predictions are impossible and science will collapse. Here is a circumstance—identical photons are always coming down in the same direction to the piece of glass—that produces different results. We cannot predict whether a given photon will arrive at A or B. All we can predict is that out of 100 photons that come down, an average of 4 will be reflected by the front surface. Does this mean that phy...