It's roughly the case that if systems become too complex to study in sufficient depth, physics hands them over to chemistry, then to biology, then experimental psychology, and finally on to history. Roughly. These are tendencies, and they tend to distinguish roughly between hard and soft sciences.

There's actually an article in the Washington Post, I don't know whether it's tongue in cheek or not, which said the criterion for being on the list of banned states is that [Donald] Trump doesn't have business interests there.

The change between horse and buggy to automobile is a big change and there hasn't been a major change since.

Hamas must agree to first recognize Israel, second to end all violence, third to accept past agreements. Try to find a mention of the fact that the United States and Israel reject all three of those. They obviously don't recognize Palestine, they certainly don't withdraw the use of violence or the threat of it - in fact they insist on it - and they don't accept past agreements, including the road map.

At the beginning of his administration, Reagan tried set the basis for American military intervention in El Salvador - which is about what Kennedy did when he came into office in regard to Vietnam. Well, when Kennedy tried it in Vietnam, it just worked like a dream. Virtually nobody opposed American bombing of South Vietnam in 1962. It was not an issue. But when Reagan began to talk of involving American forces in El Salvador there was a huge popular uproar. And he had to choose a much more indirect way of supporting the collection of gangsters in power there. He had to back off.

What I've called "the Mafia doctrine" in many publications: when the Godfather issues an edict, others must obey, or else. It's too dangerous to allow disobedience. A leading principle of world affairs - though, of course, officials and commentators put it more politely.

The United States in many ways resembles a Third World country - far more elevated, but it has many of those structural characteristics: the extreme inequality of wealth, the deterioration of infrastructure because it only serves poor people, predatory operations, huge corruption, and so on.