The title is egregiously titillating, yes, although maybe the three may actually encompass human nature pretty well. Time today only for piggy-backing on Psychology Today, which has several interesting posts.
1. After I touched on the ambiguity of marijuana a few days ago, I see that Stanton Peele discusses the prospects of legalizing that drug (at least), in contrast to President Obama's dismissal of the idea. I am not voicing an opinion, just providing a link; and to state the obvious, legalization is no guarantee of benignity (see alcohol, cigarettes).
2. Satoshi Kanazawa presents evidence, furthering the sum total of unfairness in the world, that contrary perhaps to dumb-blonde stereotypes, there is a modest but real positive correlation between attractiveness and intelligence in both men and women. Superficiality as profundity.
3. Moses Ma considers the psychology of Twitter (basically, we evolved over eons in groups of 30 to 70 relatively close peers, and we're continually trying to recreate that in our socially deprived culture, but one can have too much of a good thing and become, if successful, a celebrity, and if unsuccessful, a narcissist). Actually I may give in to Twitter, as part of my slow descent into decadent digital distraction, and as a 140-character pithiness challenge. Blogs encourage prolixity. Bad.