The ‘statistical tie’ fallacy

As I said earlier, journalists will use every device to persuade us that elections are closer than they are, in order to keep interest high. One of the things they do is to assert that if the difference between the predicted votes for two candidates is smaller than the margin of error of the poll, then the two candidates are in a statistical tie. This gives the impression that it is a toss-up, i.e., 50-50 chance, as to who is ahead. This is simply not true and worth reiterating during the election season, like I did back in 2008 around this time. [Read more…]

Why is there something rather than nothing?

Religious people (at least the sophisticated ones) have abandoned trying to argue as evidence that god provides explanations for how things work. They have realized that this is a losing strategy as science has made god redundant as an explanation for anything, and that signs of god’s power seem to show a notable inverse correlation to the advance of science. [Read more…]

New results from the Lenski E. coli experiment

One of the most beautiful experiments in evolutionary biology is the one by Michigan State University’s Richard Lenski and his team, most recently Zachary Blount, who started out in 1988 with a single strain of E. Coli bacteria, separated it into twelve genetically identical lines, and then did experiments on them to see how each strand evolved. By now 55,000 generations have occurred, a crucial fact since in evolution it is the number of generations that is the appropriate measure of time, not years. [Read more…]

Scientists, journals, and science journalists behaving badly

Science journalism plays an extremely important role in translating the almost impenetrable jargon and style of journal articles into languagethat can be digested by the general public. Hence it is important that they convey accurately and in a balanced way the main conclusions of the research. But in order to make their work appealing to the general public, scientists make often make passing claims in their papers that are not as well supported by their data but catch the eye of journalists who then give them undue weight. Seth Mnookin has pointed out recent examples where this practice has caused widespread public misunderstanding of the results of research. [Read more…]

Weird fluids

Most of us are familiar with the fact that with solid objects, it is harder to start things moving than it is to keep it moving. A similar phenomenon occurs with fluids, where we use the term viscosity to indicate the frictional effects. With most fluids, keeping it stirred is easier or stays the same when compared to starting to stir it. [Read more…]