Knowledge of Primary and Secondary Qualities We normally think we know the shapes and colors of things: I know, for example, that the cup in front of me is cylindrical and blue. But reflection casts doubt on this commonsense assumption, in two ways. First, there is the question of whether I really know that the […]
Wing Surfing Yesterday I went wing surfing for the second time with my friend Eddy in his boat. We were in Biscayne Bay, far out but in shallow water, virtually alone. I was using an inflatable paddle board and a 4.5 meter wing, which also had to be inflated (it’s a work-out). Despite my familiarity […]
Explaining Knowledge We have many kinds of knowledge: perceptual, introspective, scientific, linguistic, ethical, logical, mathematical, aesthetic, historical, and others. Epistemologists have asked which of these is best justified, and which least justified. We should be able to rank them for degree of justification: introspective and mathematical knowledge might get high marks for justification, perceptual and […]
Bat Science What does the science of bats (Chiroptera) include? There are 1,400 species of bats and they make up 20% of all mammals. Many of them use an echolocation sense, though not all. We can expect a science of bats to deal with their anatomy, evolution, physiology, and psychology. With respect to the first […]
Four Types of Quantification It has been said that there are really two types of quantification not one: “objectual” and “substitutional”. The objectual type may be paraphrased as follows: “There is an object x such that x satisfies F, where F is a predicate” (and similarly for the universal quantifier). The substitutional type may be […]
Stock and Tuvel I was just watching a video of Kathleen Stock and Rebecca Tuvel at Cornell talking about their experiences in academia in recent years. Both women struck me as eminently sensible and decent people with perfectly defensible (and innocuous) views. Yet they have been subjected to vicious persecution and cancellation by assorted idiots. […]
The Situation Room I just read my friend George Stephanopoulos’ book The Situation Room, an account of said room over the last sixty years or so. It is a well-researched, clear, and smoothly written book, full of information, eye-opening. As a window into American politics over the relevant time period, it is exemplary; everyone in […]
Albert Einstein: Logical Positivist In chapter 3 of Relativity (1916) Einstein writes: “We entirely shun the vague word ‘space’, of which we must honestly acknowledge, we cannot form the slightest conception, and replace it by ‘motion relative to a practically rigid body of reference’” (22). Overlooking the use-mention error, Einstein is stating, as if self-evident, […]
Friendship In our society we treat romantic and friend relationships differently. Romantic relationships go through predictable stages, often culminating in marriage: they progress to the point where a legal contract is in order. But friendship does not follow this course: it develops but it doesn’t culminate in a legal contract, or any kind of contract. […]
Applause I once gave a lecture in Finland on externalism and twin earth cases. At the end there was a very brief burst of applause, lasting no more than two seconds. Afterwards I said to my Finnish friend Esa Saarinen that they must not have liked it much given the brevity of the response. On […]