Posts Tagged ‘science’

In this piece, for example, the author pats himself on the back for his “paper output” and high h-index. The h-index is a count of papers published that factors in how many times those papers have been cited. It’s a better metric than simply a paper count because it attempts to assess quality under the assumption that quality can be measured by citation. Good papers are cited more than bad ones, in theory. That’s fine, but it’s still a measure inherently based on total output. 

Judging the quality of a scientist by publication volume has always bugged me. Lets say I do a thorough, solid experiment that involves several steps. Maybe first I do some tests to figure out how to control for something. Then next I do some to figure out the best conditions to use. Then, finally, I do my experiment under the conditions and controls I determined earlier. Because I did the first two steps, the third should give me a very nice, definitive data set. If I publish it all, it will make a great paper. If I did my job right, after you read my paper you shouldn’t be left with any doubts along the lines of “well, maybe, but you didn’t account for so and so…” because I already thought of possible problems and did the initial steps to solve them, and included that data. 

But I’m being judged on number of publications, so rather than write one thorough paper I’ll split it up into three, none of which can really stand on their own. That doesn’t help me (you’ll read my paper and say “wow what a piece of shit this experiment is, they didn’t even take so and so into consideration” and so you’ll think I’m an idiot for it) and it certainly doesn’t help anyone who reads the paper. 

The h-index weights a straight paper count by incorporating how often those papers get cited, so its a bit better, but still problematic. For one thing, most papers start out in the Introduction section with some perfectly obvious, banal fact. “As a result of increasing oil prices, alternative forms of energy are attracting significant interest”. People feel the need to cite that All. The. Time. so a great many citations to a paper don’t necessarily cite the results, or some new method, but just some obvious statement that sets up the intro. 
Further, lets say I want to raise my h-index. I’ll start by writing lots of short partial papers like I mentioned, and I’ll get all my friends together. We all agree to cite each others papers every time. Or I could cite myself. Or, as an anonymous reviewer, I could demand others cite me In other words, game the system with a bunch of useless, incestuous citations.

Scientists naturally want to develop a system to quantify everything. That makes sense. But when assessing research, counting papers and citations just doesn’t cut it. You have to read papers, and decide whether or not those papers are good. Output based standards are lazy methods of evaluation that incentivize bad, lazy science. 


Read Full Post »

If you’re anything like me, you probably found the worst part of the Presidential debates to be the section on energy. Essentially, the candidates spent a couple minutes arguing over Solyndra and then a couple more seeing who could say the most nice things about West Virginia’s 5 electoral votes coal, then they reached a consensus that neither of them actually care when they could be arguing over who is the better job creator instead. 

So I was glad to see that an entire debate was held between the campaigns on energy at MIT. Here’s the transcript. The candidates themselves weren’t present, but their (high level) campaign surrogates were, which I suppose is the best we can hope for in what 99% of the public would find to be an excruciatingly boring debate put on by a bunch of MIT nerds. Romney was represented by his campaign’s domestic policy director, Oren Cass, and Obama by former White House energy and environment adviser Joe Aldy. I won’t write up a complete play by play commentary here, but I do want to point out a couple things. 

On the question of government incentives to spur energy innovation, Romney’s campaign would focus on basic research, rather than direct subsidies to specific companies (read: Solyndra). It kind of gets lost in an argument over wind subsidies, but both campaigns are really saying the same things here, that basic research is something the government should be doing. They both go on to praise ARPA-E (a DOE energy research funding program, modeled on a defense research funding program). The Obama campaign also sets a solid benchmark: a goal of 80% “clean energy” by 2035 in the power sector (ie electricity, not liquid transportation fuels). The problem is that coal and natural gas are included as clean energy. I’m less concerned about the carbon emissions aspect of this (and this holds true for my views on energy as a whole) than I am about the non-renewable nature of these fuels. My concern with a heavy reliance on coal and natural gas is that we will run out of both of these things, and find ourselves in the same boat down the road. We would be better served by renewables. 

The Romney campaign’s follow-up to that is, I think, very troubling (emphasis mine):

I think an interesting thing that Joe mentioned that begins to raise deeper issues about the president’s plan is that he frequently cites job creation as the goal. If job creation is the goal for energy policy, and Governor Romney believes it should be, then we should be focusing our energy policy in a direction that creates jobs. Now it is true that jobs are created assembling wind turbines, assembling solar panels, but in fact, the jobs that are destroyed and eliminated elsewhere in the economy every time we do that are significantly larger.

There is no evidence, frankly, that the sorts of investments the president is making in green energy are superior to using the far more economically effective energy technologies we already have available, and as with almost every area of technology we see, the best way to produce those innovations is not, again, through government choosing which technologies are best, but through actually encouraging innovation in the private sector.

Job creation is a wonderful, important thing. I support it! But it should not in any way be the goal for energy policy. As an added benefit, awesome, but not the goal. The goal of our energy policy absolutely must be to find a way to obtain energy sources that we can continue using for some time. Again, I don’t view this as much as an environmental issue (though it certainly is) than an issue of having the energy we need to do the things we want to do. Continued reliance on fossil fuels, coal and natural gas included, doesn’t fit the bill. We can and should continue our use of fossil fuels, but they will become progressively scarcer and more expensive, and will by necessity be phased out. We need renewable energy to fill their gap. Now is the time to find those sources, before we experience significant disruptions to our economy. Disruptions which, by the way, will have a massively larger impact on jobs than any individual policy we could argue over in this area.

In an exchange about shale gas, we get back into the argument we heard at the Presidential debate over drilling on federal vs. non-federal land. I really don’t undertand the distinction. It seems like a way to cherry pick the data to make a point, and the whole thing is being used as a proxy for an argument over the role of government. That’s all fine, but when it comes down to the actual issue of energy, 1 BTU derived from federal land = 1 BTU from private land. 

On the issue of “energy independence”, the Obama campaign’s answer acknowledges that the energy market is global. This is an important fact that I think is often misunderstood. Even if the US has the necessary energy production (from whatever sources) to meet 100% of its demand, it still participates in a global market. Some of that energy will be sold abroad and some domestically. We will likely never encounter a situation where we utilize only what we produce. 

The Romney campaign defines energy independence as “the economic activity associated with energy production is something that occurs here, so that the wealth that we are seeing experienced in the places that we import from now is instead occurring in our own communities.” But in the very next sentence he goes on to say we need to expand production in Mexico and Canada! 

In an exchange regarding explicit subsidies for various energy sources, The Obama campaign makes what I think is a very important point:

Now when we actually think about reforming these, I think it’s important that’s there some who say, let’s just have a level playing field. Let’s get rid of all the subsidies. Now when you’re doing that, you may say, hey, we don’t want to pick winners, but you are picking winners. First, those who have benefited by subsidies for an incredibly long time, the incumbents in the fossil fuels that have benefited from subsidies for, in the case of oil, nearly a century, they’re winners. They’ve become established, and they will actually benefit if you got rid of all of these.

Exactly. “Leveling the playing field” automatically hands advantage to oil, as the incumbent. Now you may say that this is just the free market at work, and that’s a perfectly reasonable opinion. But my problem is that markets are reactive, not pro-active. The free market case goes that when, for example, oil is no longer preferable, market forces will shift towards renewables (or whatever, non-oil). In the time it takes to make that shift, though, we will be hobbled by soaring energy prices. That will be crippling for the economy. Why, when we know that oil will become increasingly scarce, wait on the market signals? Best to develop the alternatives now, in my opinion, in order that they are ready for deployment when needed. 

The argument then goes on to what counts as a subsidy, and gets a little semantic, but neither side makes what is, to me, the obvious point. The largest government subsidy in the energy sector is the United States Military. The global flow of oil is secured in large part thanks to the fact that anyone who decides to block our flow of sweet, sweet crude will find themselves on the receiving end of a carrier battle group. This is never brought up in the discussion of energy subsidies, or cost/benefit analyses, but it is very significant. If we didn’t have oil to secure, our role in the middle east would be much reduced. 

On the topic of coal: Everyone loves it! West Virginia, 5 EV, etc. The debate quickly becomes a he said / she said on the job killing EPA and the cost / benefit of “clean coal” (ugh), but the Obama campaign makes the fundamental point when talking about the coal industry’s future:

In fact, when you actually look at the analysis, EPA did not say there’ll be no new coal plants because of this regulation. They actually said that because of natural gas prices, we don’t foresee any new coal plants coming online. So they actually estimated that there is not this burden on the coal industry because they are going to have challenges with new plants competing with natural gas.

Exactly right. Coal simply is not competitive with cheap natural gas. That’s just the reality of it. If you want coal to be a big part of our energy future, you have to shut down shale gas or heavily subsidize coal. Romney’s campaign can’t go all free market on us while simultaneously talking up coal’s bright future. Sorry, West Virginia. Yes, EPA regs will exacerbate coal’s problems, but they’re icing on the cake. Coal is going down in the face of cheap natural gas, with or without those job killing lazy socialist bureaucrats at the EPA. 

On the policy steps each campaign would take to reduce carbon emissions, Romney’s campaign makes the crucial point:

China’s increases in coal consumption are extraordinary. In fact, over President Obama’s term, for every 1 unit of coal that has been cut in the United States, China has increased its consumption by 10. And so in that context, for the United States to take action to drive up the price of carbon in this country to try to reduce emissions is not going to address what is a global problem. What it is going to do is hurt our economy very seriously, and it’s going to drive a lot of industrial activity from the United States to countries that are frankly much less efficient in their use of energy. So the positive benefit is weakened even further in that respect.

I don’t agree with the economic analysis here, but I’m glad Romney’s camp recognizes that carbon emissions are a global issue, and that the energy appetite of developing countries is voracious. Our reductions will pale in comparison to others’ increases. Now I don’t think that’s a reason not to attempt to curb our own emissions, but it’s an important aspect of the situation to recognize. Improving our efficiency and switching to renewable forms of energy will reduce our emissions, and have the benefit of reducing our demand for non-renewable energy! We can’t just ignore the problem because China. 

On the larger question of climate change, this came as news to me:

So what Governor Romney has said about climate change generally is that he believes its occurring, that he believes human activity contributes to it, but that he thinks there’s absolutely still a debate around the extent of — on both of those factors, and the nature of the threat that that poses. And so he certainly supports continued scientific inquiry in that respect.

Mitt Romney: Not a “climate denier”? Who knew? Don’t tell the Republicans. 

This post is already long and rambling so I’ll wrap it up. In my opinion, the largest problem we face on the issue of energy is that we rely on non-renewable sources which we will exhaust, at massive cost to our economy and society. We must find reliable, renewable alternatives. The issue of energy is largely misunderstood, and its discussion typically comes down to tree hugging hippy liberals vs. greedy pollution loving conservatives, but that’s a silly framing. Overall this was a good, substantive, and informative debate. I wish people knew it actually happened, and I wish the candidates themselves could engage in a debate like this, on this and every other issue. We would be a lot better off. 

Read Full Post »

Kevin Drum asks a germane question on heat transfer and the insulating properties of window blinds, but then (in an obviously tongue in cheek way) asks a much more interesting question:

Next up: Does evolution violate the second law of thermodynamics? Please provide a minimum of 20 typed, single-spaced pages of word salad to justify your answer.

Challenge accepted! And just a couple paragraphs will do, thanks. First, some background. The second law of thermodynamics states that:

“in all energy exchanges, if no energy enters or leaves the system, the potential energy of the state will always be less than that of the initial state.” This is also commonly referred to as entropy.

Entropy is a measure of disorder: cells are NOT disordered and so have low entropy. The flow of energy maintains order and life. Entropy wins when organisms cease to take in energy and die.

So according to the second law, a system will always lose energy unless some is added, a system should slowly break down over time, going from more to less complex until it breaks down entirely. But evolution goes the opposite direction, creating complex multicellular organisms where previously there were single cells and before that some protein floating around in some primordial ooze.

So why is the second law not violated? If you consider the earth, or just the biosphere, it would seem to be. It’s getting more complex! But energy is being added to the biosphere in the form of food energy, and its being added to the earth as sunlight. The second law allows complexity to increase if energy is added, so it hasn’t been violated. The only way for evolution to violate the second law is if you forget the universe.

Consider a much larger scale and you see that energy is added to the biosphere via the sun, and so it can evolve. But energy leaving the sun is precisely what the second law says should happen. And not all of that energy enters the biosphere to feed evolution. Some of it is dissipated as heat, some gets absorbed by inanimate objects, some misses the earth entirely, etc. More disorder is created by energy leaving the sun than order is created by energy entering the biosphere. So the second law, writ large, holds.


Hey, its this or I bitch about Paul Ryan some more…

Read Full Post »

After discussing my previous post about “low sodium salt” with some folks (one of whom was my former high school chem teacher), it seems as if I was a bit too hasty in jumping to my conclusion that the product contained 33% sand. When I saw silicon dioxide (sand) listed in the ingredients list, much more prominently that it was listed in the “regular” varieties, I figured I was on to their game.

But as it turns out, I was wrong after all. The product does not contain a significant amount of filler. So back to the original question. How do you get low sodium salt? I was partially right, I suppose, in that they reduce the overall quantity of salt (not just sodium) you consume, but not by replacing it with filler as I thought. The key is in the words “per teaspoon”. The product is described on Diamond Crystal’s website:

Salt Sense® brand is 100% pure salt with 33% less sodium by volume. The result of our patented manufacturing process is a natural flake-shaped crystal that is less dense than that of common salt. These crystals dissolve faster to give you real salt taste, without leaving any metallic aftertaste. It’s simply the sensible way to enjoy real salt.

Emphasis mine. That seems to be the answer. Because their crystals are irregularly shaped, they do not pack together as well as would uniformly shaped crystals when you scoop them. Thus, in a given volume of crystals, there will be more void (empty) space than would be present if the crystals were uniformly shaped. So less mass, ie less salt. 33% less, if they’re to be believed.

So there ya go. This should be taken as a lesson to not jump to conclusions in science. Nine years and two engineering degrees later, my high school chem teacher is still busting my ass. Restores a bit of faith in the future of humanity.

And no, I will not go run three miles.

Read Full Post »

America Is Doomed

Because this exists:


Folks, this is a picture of low sodium salt. Let me say that again. This is a picture of low sodium salt.

It’s time for a quick chemistry lesson. Salt is also known by its chemical name, sodium chloride. It has the formula NaCl. That’s one sodium ion bonded to one chlorine ion. If you remove the sodium, you have chlorine. Or to put it another way, if you remove the sodium, you no longer have salt.

So how do you get low sodium salt? You don’t. The phrase “33% less sodium per teaspoon” is correctly read as “33% less salt per teaspoon”. My theory was that this could be easily accomplished by adding a filler. And I was right! The second ingredient listed (after salt) on the back of the package was “silicon dioxide”. Time for your second chemistry lesson. Silicon dioxide, SiO2, is the chemical name for sand. Yes, sand.

And so the phrase “33% less sodium per teaspoon” can also be correctly read as “33% more sand per teaspoon”. The good folks at Diamond Crystal have successfully discovered a way to sell you sand.

If you initially saw the above picture and thought “hey, great idea!”, I have a really fantastic bridge to sell you.

Read Full Post »

The President, to the Curiosity rover team at NASA:

“If in fact, you do make contact with Martians please let me know right away,” the president joked. “Because I’ve got a lot of other things on my plate but I suspect that that will go to the top of the list – even if they’re just microbes, it will be pretty exciting.”

Hell yea it would!

Call this a puff piece or whatever but I can honestly say that something I’ve always been impressed by is the fact that Obama seems to legitimately find science cool. I think that’s a good thing, and a welcome difference from those on the right who attempt to demonize science.

Read Full Post »

You can get a publication for watching Stephen Colbert?!?

Read Full Post »

Older Posts »