Category Archives: Business

Reversing Aging

A long but interesting interview with George Church:

Certainly if you could fix all nine hallmarks at once that would do well. Reversal of aging has been demonstrated in simple animals. Some people will dismiss those as too simple — because they have such a short life already, it’s not surprising you can make them live longer. But I think it’s quite clear that aging is programmed in some sense. It’s not like you’ve been programmed to die at some age, but the laziness of evolution has resulted in your program to not avoid dying.

Over evolutionary time, to use analogy, it was not cost effective to invest a lot of your precious food to live longer because you’re going to get eaten by a wolf anyway. Now we have plenty of excess food, and rather than becoming obese let’s spend that on living longer, by spending extra ATP on repair and rejuvenation. That’s something 20-year-olds do fine, but after 60 you stop investing quite as well.

Yes. There has been no evolutionary pressure for us to live longer, but it’s absurd to think it would violate any laws of physics (and ultimately, even biology comes down to physics) that prevent us from living indefinitely long lives. And how soon could it happen?

The simple answer is, I don’t know. Probably we’ll see the first dog trials in the next year or two. If that works, human trials are another two years away, and eight years before they’re done. Once you get a few going and succeeding it’s a positive feedback loop.

That’s pretty exciting, but still: faster, please.

But I did come across this:

If you find that in the western world we’re eating a lot of marbled cow that didn’t exist in the ancient days, all you have to do is get rid of the marbled cow and you’re all set.

Except I’m not aware of any scientific evidence that marbled cow is a problem. I wonder how up on nutrition he is?

3-D Printed Metal Parts

They’re getting better:

The new device reflects a wave of rapid progress in metal 3-D printing, suggesting that the technology is moving toward becoming a more realistic manufacturing tool. Last month, researchers from the Lawrence Livermore National Laboratory announced they had developed a new method that created stainless-steel parts three times as strong as any previous 3-D-printed steel parts. That means mission-critical parts can be created using 3-D printing without worries about compromising structural integrity. Startup Desktop Metal, meanwhile, is helping to overcome the speed barrier. Its production machine, available for purchase next year, makes metal parts 100 times faster than a laser-based 3-D printer.

Cool.

Millennials’ “Education”

The hard lifting of undoing it:

One of the falsehoods that has been stuffed into your brain and pounded into place is that moral knowledge progresses inevitably, such that later generations are morally and intellectually superior to earlier generations, and that the older the source the more morally suspect that source is. There is a term for that. It is called chronological snobbery. Or, to use a term that you might understand more easily, “ageism.”

Second, you have been taught to resort to two moral values above all others, diversity and equality. These are important values if properly understood. But the way most of you have been taught to understand them makes you irrational, unreasoning. For you have been taught that we must have as much diversity as possible and that equality means that everyone must be made equal. But equal simply means the same. To say that 2+2 equals 4 is to say that 2+2 is numerically the same as four. And diversity simply means difference. So when you say that we should have diversity and equality you are saying we should have difference and sameness. That is incoherent, by itself. Two things cannot be different and the same at the same time in the same way.

Furthermore, diversity and equality are not the most important values. In fact, neither diversity nor equality is valuable at all in its own right. Some diversity is bad. For example, if slavery is inherently wrong, as I suspect we all think it is, then a diversity of views about the morality of slavery is worse than complete agreement that slavery is wrong.

Similarly, equality is not to be desired for its own sake. Nobody is equal in all respects. We are all different, which is to say that we are all not the same, which is to say that we are unequal in many ways. And that is generally a good thing. But it is not always a good thing (see the previous remarks about diversity).

Related to this: You do you not know what the word “fair” means. It does not just mean equality. Nor does it mean something you do not like. For now, you will have to take my word for this. But we will examine fairness from time to time throughout this semester.

Read all.

Enceladus

I tweeted from the meeting in Seattle last Thursday that this was probably the biggest news from the event:

The Russian billionaire venture capitalist and amateur physicist is the man behind the Breakthrough Starshot mission to send a nano-spacecraft to the closest star, Proxima Centauri, and an initiative called Breakthrough Listen to use powerful radio telescopes to search for signals from intelligent extraterrestrial civilizations. Now Milner’s Breakthrough Initiatives has set its sights on Enceladus.

“We formed a sort of little workshop around this idea: Can we design a low-cost, privately funded mission to Enceladus which can be launched relatively soon?” Milner said at an inaugural international space summit called “A New Space Age” put on by the Economist magazine in Seattle, as reported by Space.com. If Milner is serious about launching a spacecraft to Enceladus, it would be a historic feat as the first privately funded mission to the outer solar system. (If it launched today, it would be the very first private interplanetary mission at all.)

I haven’t talked about it on the blog, but I may be at least partially responsible for this. About a year ago, in the context of developing my Ending Apolloism rant, I started working out the possibilities of a private Enceladus mission, partly just to show that we don’t need no stinkin’ SLS to do fast outer-planet missions. All of the Congressional focus had been on Europa, due to enthusiasm for the mission by Chairman Culberson.

When I went to the New Worlds conference in Austin last year (previous version of the one I attended last week), I talked to Pete Worden about it, as well as John Mankins and John Carrico (who was Google’s astrogator at the time, before they sold off Terra Bella). They all thought it was feasible. However, Pete said that he didn’t think that Yuri would be interested in a private mission to Enceladus, because he wouldn’t want to be distracted from his starship. (Imagine someone typing that sentence a decade ago.)

I talked to some planetary scientists, including Carolyn Porco (PI on Cassini, who is very enthusiastic about prospects for life there, and who was at the Seattle event as well, giving a whoop of joy from the back of the room when Milner made the announcement) and Morgan Cable at JPL. Mike Loucks provided me with some porkchop plots, and we saw some interesting opportunities for fast trips to Saturn in March of every year, starting in 2020, for affordable C3s. It wouldn’t orbit, but be a fast flyby when the moon was outside the limb of the planet, at about 10 km/s, which Morgan told me would be a reasonable velocity to gather dust to search for organics and particularly amino acids. I also talked to ULA, who worked out some numbers of what could be done with Vulcan/ACES and a Star-48.

The idea would be to have a mother ship with a flock or flocks of cubesats that could scatter themselves around the limb of the moon, maybe in several waves to get time variation as well, to taste the flumes of the geysers. It would charge the batteries on the birds, send them off, and store and relay the data back to earth (it would require cooperation from NASA to use the Deep Space Network). I also talked to Professors Jordi Puig-Suari (inventer of the cubesat standard at Cal Poly SLO) and Dave Barnhart at USC about the feasibility, and they thought it would be a good cubesat app. My idea was to put together a basic mission concept and cost estimate, and look for money and a PI. I would be the inital project manager, until we could raise the money and hire someone else who knew WTF they were doing.

Anyway, when I saw Pete in Pasadena at the Space Tech Expo in May, he told me that Yuri had in fact developed an interest in ocean moons. I don’t know whether it was because of my suggestion to Pete or not, and I don’t know whether the workshop came up with something similar to my concept, but based on what Yuri said at that meeting, it sounds like it. In any event, I’m very happy to see this happening.