October 11, 2009
Britain's Central Planning Death Panels
October 11, 2009
Free Market M.D.
October 11, 2009
Economies of Scale in Compliance
October 11, 2009
Balan's Challenge
October 10, 2009
The Pleasure of Telling Others What to Do
October 10, 2009
Gonick the Great - and How He Could Have Been Greater
October 9, 2009
More Scott Sumner
October 9, 2009
Not From The Onion
October 9, 2009
Thoughts on a Second Stimulus


If you think human nature has changed over the past 300 years, my questions would be: (1) why? (2) how? What is the evidence that there has been a change in human nature, and what is the mechanism by which this change occurred?
Thanks for the link. I hope you read my commentary in the (challenging-yet-friendly) spirit intended...
Why not take your argument one step further and say that if human nature has changed, than it is because human institutions have changed?
Institutional change (up to now!) has been very, very slow on the time scale of individual human life. Couple that with the loss of institutional memory caused by death, and you have an explanation for your observation (which is essentially correct, on my view) that human nature has improved over the centuries -- but very, very slowly.
http://brokensymmetry.typepad.com/broken_symmetry/2008/07/focal-points-co.html
It's difficult to be quantitative about these things. But the way to start is to be clear-eyed about our qualitative analysis, ignoring the people who disagree but cannot provide REASONS for their disagreement.
Human behavior can evolve not just through human DNA, but also through bacteria. If this is a time in history when being less violent is a benefit, the bacteria that make us less aggressive will promulgate. Most babies are colonized with their mother's bacteria during birth, so transporting live babies back 300 years might have that effect, and it just might propogate to other humans around them. (Or they might end up overwhelmed and colonized by the "violent" bacteria they're surrounded by.)
The role of bacteria is a whole 'nother wrinkle in the nature-versus-nurture debate. I'm not enough of a biologist to be able to say just big a role that is.
Aaaagh - white text on black background! Why?!!
Just my observation but it seems to me that breeders have bred much of agressiveness out of dogs in just the last 30 years.