Archive for the ‘Science/Technology’ Category

On Why There Is Something Rather Than Nothing

Tuesday, May 18th, 2010

An article today in the New York Times reports that, in physics anyway, we are on the verge of discovering why there’s something rather than nothing… or at least why the Big Bang has produced more matter than anti-matter. It all has to do with “the behavior of particularly strange particles called neutral B-mesons, which are famous for not being able to make up their minds”-

They oscillate back and forth trillions of times a second between their regular state and their antimatter state. As it happens, the mesons, created in the proton-antiproton collisions, seem to go from their antimatter state to their matter state more rapidly than they go the other way around, leading to an eventual preponderance of matter over antimatter of about 1 percent, when they decay to muons.

Whether this is enough to explain our existence is a question that cannot be answered until the cause of the still-mysterious behavior of the B-mesons is directly observed, said Dr. Brooijmans, who called the situation “fairly encouraging.”

The observed preponderance is about 50 times what is predicted by the Standard Model, the suite of theories that has ruled particle physics for a generation, meaning that whatever is causing the B-meson to act this way is “new physics” that physicists have been yearning for almost as long.

Dr. Brooijmans said that the most likely explanations were some new particle not predicted by the Standard Model or some new kind of interaction between particles. Luckily, he said, “this is something we should be able to poke at with the Large Hadron Collider.”

Okay guys, get poking! But, of course, a new model that explains the matter-anti-matter asymmetry better than the old “standard” model won’t solve the Really Big Question that metaphysicians, like very young children, always have at the ready: why? Why has this (fill in any impressively predictive physical model you like) ever happened? It seems unlikely that any merely descriptive theory, no matter how useful, will ever satisfy those who find this question engaging. Of course, it’s easy to write the question off as presupposing a sort of anthropomorphism, as if a universe had to be designed for a reason or purpose. But I think the question goes deeper than that, because even if you recognize that expecting the universe to have a purpose or a raison d’être is committing a sort of logical error or “category mistake”, the question still feels sensible. Maybe such a feeling just indicates that one is banging up against the limits of the human mind… and maybe not.

Climate-Change Denial Crock Of The Week

Tuesday, March 16th, 2010

I discovered this Peter Sinclair video (and others in the series) over at Little Green Footballs, a blog run by Charles Johnson, a friend of mine from way-way-back. I haven’t always agreed with Charles’ political views, but his latest grand obsession is to highlight examples of critical thinking like this, and to rail against the increasingly loud voices of irrationality by exposing their deceptive tactics. Keep it up, old pal.

Net Neutrality: Are All Packets Created Equal?

Saturday, October 31st, 2009

I’ve often heard the catch phrase “net neutrality” and thought it meant something like “ISPs can’t favor some sites over others on the internet”, or “no censorship of internet sites by ISPs”. So I was all for it. However, a few days ago, after listening to the Joy Cardin show on Wisconsin Public Radio, I discovered that the issues are more complex than I’d imagined. Congress and the FCC are currently writing rules of the road that will affect every internet user, so it’s not a bad time to educate yourself on the broadband traffic situation, and the potential consequences of continuing to insist that the internet act as a “stupid pipe”. Just to take one example, there’s an argument to be made that as long as the net is going to be used to relay time-sensitive data like real-time voice or video communications, routers should be allowed to give those data priority over other data that would not suffer from a few milliseconds of delay between packets. More generally, perhaps ISPs and others should be allowed to discriminate not between sites, but between different data types. Cardin’s guest, Christopher Davies, wrote two columns, one on each side of the issue. You can read those here and here. Here’s the show in its entirety, which WPR members can also download from here.



L’Chaim!

Thursday, March 26th, 2009

And now for something completely different…

Although the modern circumcision procedure is often credited to (or blamed on) the longstanding Jewish ritual, the practice was found in many ancient cultures. These days, 79% or so of American men are circumcised, but in recent years the procedure has been scrutinized by many who wondered about the rationale for such mutilation (let’s not mince words here). Two of my closest friends struggled mightily to decide whether to have their newborn son circumcised, and in the end decided to do so mainly because the father was circumcised, and didn’t want the son to feel different from the father. Not a particularly compelling reason, they realized, but a decision had to be made.

As the above article (and many others on the web) attests, the ancient ritual was done for all sorts of superstitious or otherwise misguided reasons. But recent studies have shown that there does seem to be a good medical reason for the practice, and this view was bolstered by an AP article today-

LOS ANGELES – Circumcision not only protects against HIV in heterosexual men, but it also helps prevent two other sexually transmitted infections, a large new study found. Circumcised males reduced their risk of infection with HPV, or human papillomavirus, by 35 percent and herpes by 28 percent. However, researchers found circumcision had no effect on the transmission of syphilis.

Landmark studies from three African countries including Uganda previously found circumcision lowered men’s chance of catching the AIDS virus by up to 60 percent. The new study stems from the Uganda research and looked at protection against three other STDs. The findings are reported in Thursday’s New England Journal of Medicine.

“Evidence now strongly suggests that circumcision offers an important prevention opportunity and should be widely available,” Drs. Matthew Golden and Judith Wasserheit of the University of Washington wrote in an accompanying editorial.

So if you are a circumcised heterosexual man who has wondered whether your parents made the right decision (and what circumcised heterosexual man hasn’t, at least in passing?), you can rest a little easier today. As I’ve previously pointed out, sometimes irrationality, superstition, or just plain tradition happens to get things right.