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What Are The Chances That You Would Be Born?

blogs.law.harvard.edu

11–20 of 44 posts

Re: What Are The Chances That You Would Be Born?

#13
This reminds me of a bit from the introduction to "A Short History of Nearly Everything", by Bill Bryson. To wit:

"Not only have you been lucky enough to be attached since time immemorial to a favored evolutionary line, but you have also been extremely — make that miraculously — fortunate in your personal ancestry. Consider the fact that for 3.8 billion years, a period of time older than the Earth's mountains and rivers and oceans, every one of your forebears on both sides has been attractive enough to find a mate, healthy enough to reproduce, and sufficiently blessed by fate and circumstances to live long enough to do so. Not one of your pertinent ancestors was squashed, devoured, drowned, starved, stuck fast, untimely wounded or otherwise deflected from its life's quest of delivering a tiny charge of genetic material to the right partner at the right moment to perpetuate the only possible sequence of hereditary combinations that could result — eventually, astoundingly, and all too briefly — in you."

That said, the calculation is exactly as meaningful as the Drake Equation: you can plug in wild variations in equally "probable" values for the several steps in the equation, yielding staggeringly divergent end results, all of which mean precisely fuck-all, because nearly every number is little better than a wild-assed guess.

It's an interesting thing to think about, certainly, and a great way to remind yourself how stupendously fortunate you are to have been given the incredible, inestimably valuable gift of being, but in the end, it's naught more than sophistry dolled up in an equation that passes muster as well as a 16-year old kid using an fake ID saying he's 35.

Re: What Are The Chances That You Would Be Born?

#15
This brings to mind the excellent Feynman quote:

“You know, the most amazing thing happened to me tonight. I was coming here, on the way to the lecture, and I came in through the parking lot. And you won’t believe what happened. I saw a car with the license plate ARW 357. Can you imagine? Of all the millions of license plates in the state, what was the chance that I would see that particular one tonight? Amazing!”

The point that Feynman was trying to make is that you can’t just hunt for anomalies after the fact and then say they are somehow significant. You have to make predictions and do the test and see if those predictions bear out. In the same way it’s not amazing (at least statistically, although perhaps biologically) that any one person is born. It’s just like that license plate. Of course, the license plate ARW 357 is one of millions of possibilities, but that doesn’t mean that it’s amazing every time you see a license plate. They’re all one of millions, and it has to be one of them.

I came to say that, but it's eloquently copied from: http://surplusgamer.tumblr.com/post/1114853865/derren-brown-...

Re: What Are The Chances That You Would Be Born?

#17

This brings to mind the excellent Feynman quote: “You know, the most amazing thing happened to me tonight. I was coming here, on the way to the lecture, and I came in through the parking lot. And you won’t believe what happened. I saw a car with the license plate ARW 357. Can you imagine? Of all the millions of license plates in the state, what was the chance that I would see that particular one tonight? Amazing!” Th…

No one places much significance on the random people who win the lottery. But if that random person happens to be you, you feel incredibly lucky (and rightfully so).

Re: What Are The Chances That You Would Be Born?

#18
post #9

It's a meaningless "probability" on several counts. 1) It applies to everyone reading it, and it would apply to me if I were different and reading it. It tries to convey a specialness which doesn't seem to exist. If a billion people win a penny each then winning a penny isn't miraculous, even if it is a 1 in 1,000,000,000 chance that you win any particular penny - but the 'particular' part has no significance. 2) I a…

I appreciate point #2: "The probability that I exist, given that I exist, is 1." However, the question addressed by the OP is not "What is the probability that I would exist in this world?" but "What is the probability, across the space of all possible continuations of the world from the dawn of humanity, that the world would end up in a state that includes me?"

But given that "me" includes all my experiences as well as my genetics, we have to throw the probability of all those into the equation as well.

At the very least, if you're going to take these sorts of calculations seriously you're going to have to ask what the probability is not only that I exist, but that everyone I've ever met also exists.

Re: What Are The Chances That You Would Be Born?

#19
post #3

This is a fun thought experiment, but I think it over dramatizes the reality. There's a huge potential set of humans, of which the current population represents one infinitesimally tiny subset of that potential set. But there's a lot of people, and the fact that one of them is you is largely unremarkable. If it hadn't been you, it would've been someone overwhelmingly similar to you. In other words, we're not unique s…

If it hadn't been you, it would've been someone overwhelmingly similar to you.

Yet still not you.

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