Exercise Meaningful in Having Good Mental Health

In this cross-sectional study, we analysed data from 1 237 194 people aged 18 years or older in the USA from the 2011, 2013, and 2015 Centers for Disease Control and Prevention Behavioral Risk Factors Surveillance System survey. We compared the number of days of bad self-reported mental health between individuals who exercised and those who did not, using an exact non-parametric matching procedure to balance the two groups in terms of age, race, gender, marital status, income, education l...

 Kissenger Describes Sayre's law

I've been an academic and I've been a policy maker. And as a policy maker, I've had a lot of trouble from academics. Especially from the Ivy League, and I'm going to say one thing about academic politics to which Mr. Schramm referred. I formulated the rule that the intensity of academic politics and the bitterness of it is in inverse proportion to the importance of the subject their discussing. And I promise you at Harvard, they are passionately intense and the subjects are extremely unimport...

 Questioning the Milgram Experiment

It appeared that sixty-five percent of people would torture someone to death, if pressured to do so. The results made their way into both psychology and cocktail party conversation. But were they correct? At least one woman doesn't think so. Gina Perry, for her book, Behind the Shock Machine, traced as many participants in the Milgram experiment as she could, and re-examined the notes of the experiment. Milgram claimed that seventy-five percent of the participants believed in the reality of t...

 Theories Dwindle in Number as Facts Emerge

The intensity and quantity of polemical literature on scientific problems frequently varies inversely as the number of direct observations on which the discussions are based: the number and variety of theories concerning a subject thus often form a coefficient of our ignorance. Beyond the superficial observations, direct and indirect, made by geologists, not extending below about one two-hundredth of the Earth's radius, we have to trust to the deductions of mathematicians for our ideas regard...