The Canadian government gets the Snowden treatment

Canada is one of the ‘Five Eyes’ group of English speaking countries that formed a pact following World War II to share their spying information, the others being the US, UK, Australia, and New Zealand. This arrangement enables these governments to skirt the letter of the law that some countries have that prevent spying on their own citizens, since each country can spy on others and then share the information. [Read more…]

Are dogs generally scared of cats?

The conventional view is that dogs chase cats, not the other way around. I have only had dogs as companions so have never experienced what the dynamic is between members of these two species if they live together.

But from reader Norm I received this video that indicates that in homes that have both dogs and cats, the cats seemed to be quite mean to the dogs and the latter, even big German Shepherds, were quite intimidated by them. [Read more…]

I coulda been a Pip. No, not really

While writing my post reviewing the film 20 Feet From Stardom about the anonymous backup singers to the famous singers, I recalled that I used to think that for someone with limited musical ability like myself but yet thought that it would be fun to perform, the role of backup singer seemed ideal. It seemed like all it required was the ability to sway and clap while occasionally singing something. A cushy gig, it looked like. [Read more…]

The tricky cause and effect relationship

We are always warned that a statistical correlation should not be used to infer causation because either the causal relationship can go either way or both effects may be due to a third cause. The only way to truly determine the direction of causality is to design experiments that are specifically meant to tease it out. But sometimes we can be fooled by multiple, seemingly independent correlations that strongly suggest causality. A recent study of vitamin D deficiency and health illustrates this danger. [Read more…]