Posts Tagged ‘statistics’

I am going to argue that the Zimmerman verdict (for the shooting of Trayvon Martin) was the correct one.  You will either agree with me or you will not.  And then I will argue that either way, it doesn’t matter in the slightest to most people’s lives.

Let me just say, before you dismiss this post entirely because of some preconceived notion about my politics, then I am very liberal on social issues.  (As I’ve mentioned in the past, I literally don’t have an opinion on many complicated economic issues.)  I’m strongly supportive of privacy rights, voting rights, women’s rights, LGBT rights, and animal rights.  I think the idea of building a giant wall to keep out every illegal alien is absurd.  I am for the legalization of marijuana and for the decriminalization of other drug use in general.  I think man-made global warming is a self-evident fact.  I think big monolithic corporations, in the long term, have a negative effect on the happiness of the masses because they operate as entities without conscience, self-awareness, or humanity.

But when the Zimmerman verdict came back on July 13 as not guilty, I wasn’t surprised.  I wasn’t even outraged.  I just sort of shrugged and moved on.

Granted: there is still racism in this country.  I will even argue that there are often two disparate systems of justice in the U.S.: one for whites, and one for non-whites.  But still…what does that have to do with the Zimmerman verdict?

Scenario 1.  Let’s suppose the George Zimmerman is a total card-carrying KKK racist.  He may be, he may not be…I don’t have any evidence one way or another.  And most of you don’t, either.  But let’s just suppose he is.  Let’s say he follows Trayvon Martin looking for trouble; hoping for a confrontation; hoping to scare the boy.  A scuffle ensues and Martin is shot.

Is that murder?

I’m not a lawyer, but it doesn’t sound like murder.  Manslaughter seems a better fit.

Scenario 2.  Let’s be more realistic.  Let’s assume Zimmerman is a racist, but not the frothing-at-the-mouth kind.  He just feels uncomfortable having a black guy in his neighborhood.  However, if you asked him, he’d claim to not be a racist, claim to have black friends, and try to seem like a reasonable guy.

He follows Martin, hoping to scare him off, but not actively hoping for a fight; he genuinely wants to keep the peace.  If Martin gets scared, well that’s OK: he’s got no business being in this part of town.  A scuffle ensues and Martin is shot.

Is that murder, or even manslaughter?

Again, I don’t think so.  In this case, if Zimmerman is guilty of something, it’s…I don’t know…reckless endangerment?  Putting himself and another in a situation where only bad things could happen?

I didn’t follow the trial all that closely, but I will say that some people who followed the trial even less than I did were outraged at the verdict.  I can understand this, on some level; if a travesty occurs (the shooting of Trayvon Martin was certainly a travesty) then people want justice; they may even want revenge.  If Zimmerman wasn’t to blame, then who is?  Saying “the system” or “society” or “endemic racial profiling” are the root causes of Martin’s death isn’t satisfying, because you can’t put those nouns behind bars and throw away the key and feel good about yourself.  If no one gets blamed, then how does Trayvon Martin get justice?

Here are four ways Trayvon Martin could have gotten justice, or may still get justice:

  1. Florida’s inane stand-your-ground law gets repealed.  That would be justice.
  2. Community watch volunteers stop carrying guns and instead call trained police professionals if they see suspicious behavior.  That would be justice.
  3. Politicians stop listening to NRA lobbyists, and start listening to common sense: that would be justice.
  4. Zimmerman admits what he did was horribly bad judgment; pleads guilty to reckless endangerment; then performs 300 hours of community service as a sort of penance.  (In the long run this outcome would have been better for Zimmerman than the not guilty verdict, because I suspect Zimmerman may be a pariah for the rest of his life.  A little bit of remorse would have gone a long way.)

Anyway, all things considered, I think the jury did what 99% of juries would have done in this case, which was let Zimmerman go free.  The prosecution did not succeed in proving their case.  In retrospect, I think that going for a murder charge was ill-advised and entirely political; they should have aimed a little lower.  Going for manslaughter from the start had a much better chance of success.  Putting Zimmerman away for life on a murder rap isn’t justice; it’s revenge.

OK then.  Feel free to agree, or rabidly disagree.

It doesn’t matter.

The Zimmerman case was just one case.  One case, out of thousands of criminal cases in the U.S. every year.  That is, the Zimmerman trial was just one data point.

I’ve talked about this before.  You can’t really draw any conclusions about anything from one data point.  And yet, people do it all the time.  It’s a fallacy that probably has a name, but the name eludes me.  But to most people, it’s not a fallacy.  It has the weight of proof.

“I don’t believe in global warming.”  [Katrina devastates New Orleans]  “Wait, now I do!”

“I don’t think M. Night Shyamalan is a good director.”  [Watches The Sixth Sense] “Wait, now I do!”

“I don’t think racial profiling is a real thing.”  [Martin gets shot and his Skittles spill to the ground]  “Wait, now I do!”

I hope all three of these arguments is equally absurd to you.  If not, I think you lack the scientific mindset.  Now, don’t get me wrong: I think global warming is real, and I think racial profiling is real.  It’s just that you can’t make the case for those things with only one data point.  (Indeed, the case of M. Night Shyamalan shows that one data point can lead you horribly astray: after the wonderful The Sixth Sense Shyamalan has directed six turkeys in a row.)

I do think that racism still pervades the country.  I do think that whites get a different kind of justice than non-whites in our judicial system.  I do think that our country is obsessed…in an unhealthy way…with small metal devices whose sole purpose is to kill other human beings.  But I don’t believe any of these things solely because of a single data point.  You have to look at the big picture, look at the data in aggregate.  A preponderance of evidence is required to separate fact from fiction, truth from rumor, knowledge from urban legend.  As much as politicians love to bring up pithy examples, tell symbolic anecdotes, those examples and anecdotes are really rather meaningless.  Give me the data or go home.

And that is why the Zimmerman verdict is really rather meaningless.  Not to the family of Trayvon Martin, of course; I feel for them and am very sorry for their loss.  But as to what the trial says, in a larger context, about our society in general?  It says nothing.  A single data point says nothing.  It cannot say anything; that’s a simple mathematical fact.  It takes at least two points to make a line.

If you want to know how prevalent racism is, or how two “separate-but-equal” judicial systems pervade the U.S., or even whether putting guns in the hands of rent-a-cops endangers citizens, look at the data.  Data, plural.  Give Nate Silver a call.  Don’t argue by colorful anecdote.  And if you don’t have the hard data, at least have the courage to admit to yourself that what you believe is based on nothing.

That’s what I believe.  And yes, it’s really just based on nothing.  But I’m OK with that, because somewhere, hunched over a desk, Nate Silver is crunching all the numbers, and he’s still not a witch.

Read Full Post »


CNN recently posted a story about how the Feb. 15 asteroid/meteor event was very, very unlikely: a 1 in 100,000,000 coincidence.  I disagreed.  I was all ready to blog about how CNN, yet again, got a non-scientist to write about science…and my indignation was already half out of the bottle.

Then I saw who wrote the article: Meg Urry, a highly respected Yale astrophysicist.

So, I sat on my hands for a second and re-evaluated the article.  It does not contain any errors as far as I can tell.  But I still contend that the article is misleading: saying that the asteroid/meteor event was a 1 in 100,000,000 coincidence is the wrong way to look at it.

I agree that if you multiply 1 in 3,650 days times 1 in 36,500 days you get something close to 1 in 100,000,000.  But all you’ve proven is that for any given random day, there is only a 1 in 100,000,000 chance of such a coincidence occurring.

However, we now live in a post-Nate Silver, post Bayesian controversy world, right?  We’ve known about asteroid DA14 for exactly a year (as of today).  So the right question to ask, before it flew by last week, was: what is the chance that a human-injuring meteor will fly by on the same day?  Well, given that an asteroid will already pass that day, the chance of a once-in-a-decade meteor flying by that same day is just 1 in 3,650 (that is, once in a decade).

I have the utmost respect for Dr. Urry.  I suspect that the hyperbole-filled title of her CNN post was written by a CNN webmaster, not her.  I still agree that the coincidence was unlikely, but given that DA14 was already expected to fly by, the Chelyabinsk meteor hitting on the same day does not sink into the realm of unbelievability.

[Trivia note: Chelyabinsk is the birthplace of Evgeny Sveshnikov, the chess grandmaster for whom the Sveshnikov variation of the Sicilian defense is named.  And I do know that, as much as I like the Sveshnikov defense, I tend to go down in flames like a meteor whenever I play it.]

Read Full Post »


Anton Bruckner was Austrian…

So I’m new to this whole blogging thing.  When I started, back around Halloween in 2012, I had no expectations about how many hits I’d get per day, or from what parts of the world.  I don’t even think I was aware of how much of this information a blogger actually has access to.

At WorldPress.com, a blogger can look at a “stats” page and see from what country the IP addresses of hits have come from.  And now, just six weeks in, I have some interesting data to play with.

As I write this, at 2:20 pm on Thursday, Dec. 6, 2012, I have had 1366 hits to my blog.  This does not include hits from my own computer(s) as long as I’m logged in as the owner of the blog; otherwise, the number would be around 600 hits more (I edit my blogs obsessively, even days after I’ve posted them).  As I would have expected, most of the hits are from the United States (87%) but I nice 13% are from other countries.  It’s the specific countries that have hit upon my blog that have piqued my interest.


Now, at #3, I have 29 hits from Australia.  This is not surprising; I have a good friend in Australia who follows the blog.  Almost all of these hits are presumably attributable to him (thanks Rick!)

But at #2, with 86 hits, is Austria.  This is strange.  I don’t know anyone from Austria, nor honestly anyone who’s ever been to Austria.  I lived in Spain for four years, and traveled around Europe, but never made it to Austria, unfortunately.

Even stranger is the hit data from today specifically.  I have 36 hits from Austria today.  I can’t even think of a plausible explanation as to why a post about teaching quantum mechanics would suddenly be popular in Austria.

Except, I can think of explanations.  Maybe one of my blog followers is from Austria?  As of 2:34 pm today, there are 14 people who follow this blog; of those, 8 are known to me personally (and don’t live in Austria).  Of the other 6, at least one is obviously in the United States from his profile.  That leaves 5 possible Austrians.  This is the most plausible, if prosaic, explanation.

There may be another explanation.  It’s very possible to follow a blog without “following” it.  I’ve had Nate Silver’s 538 blog bookmarked for 4 years now, without ever having “signed up” to follow it.  I just go to the site and occasionally read what he’s written.  Similarly, maybe someone in Austria stumbled upon ManyWorldsTheory.com, liked it, bookmarked it, and comes back here every so often.  OK, that’s fine; but why 36 hits just today?  For that to be the work of one person, they’d have to visit the blog, then exit out, then visit it again, a total of 36 separate times.  Seems unlikely.

One (speculative) explanation is that there is an Austrian physics professor who reads this blog, liked today’s post, and then had everyone in her/his class read the post today.  But maybe you can think of a better explanation.  Maybe you live in Salzburg and are laughing at my feeble attempts at detective work.  Enlighten me, or not, as you will.  It’s fun either way.

Here’s some more blog statistics trivia, just for fun:

Average number of (unique) hits per day: 36

Record number of hits in a day: 396 (on Nov. 6, 2012, the day before the presidential election; I shared this day’s blog post on Facebook which drove up traffic)

Search engine term that sent the most number of people to my blog: missouri proposition b 2012 (39 times)

Post with most hits: Economics don’t matter (267)

Science post with most hits: Einstein’s “Imagination is more important than knowledge” (36)

Least favorite post (not including today’s and yesterday’s): Let’s ignore Grover Norquist (16)

Country #4 in terms of hits: Spain, with 7.

Country #5 in terms of hits: Canada, with 5.

Part of the fun of having a blog is reaching out to diverse people all over the world, and maybe affecting them in ways that would have been impossible even 20 years ago.  And let’s face it, playing with the demographic data is fascinating.  Keep this in mind if you’ve ever thought about blogging yourself.  Maybe you’ll get some mysterious Austrians following you, too.

Read Full Post »