23 December 2020
19 December 2020
The Biological Universe
- Life first evolved somewhere in the universe not much later than 10 billion years ago. [Arthur restricts himself to the observable universe, a space about 93 billion light years across in all directions with us at the center and containing approximately 2 trillion galaxies; the entire universe is much, much larger and, applying the principles of isotropy and homogeneity on large scales, is presumably all much the same].
- The oldest instance of the origin of life was overwhelmingly likely to have been on a planet in a galaxy at great distance from the Milky Way, just because there are literally something like a trillion candidate galaxies, each containing hundreds of billions of planets, in the observable universe ("OU" for short).
- Since that time, there has been a steady increase in the number of locales where life has originated and thrived for a time, and at least a good proportion of them continue to have life at the present epoch, such that some form of life is now relatively common in the universe.
- QED, the number of planets in the OU with some form of life, mostly limited to microbial life, is many trillions. (Note: every spiral galaxy, and probably many other types of galaxies, as well, have billions to more than a trillion planets, and a typical spiral galaxy like the Milky Way has hundreds of billions of rocky planets situated in the "habitable zone" of their stars where liquid water is possible. The same should be true of most galaxies).
[Arthur includes an additional bullet point, that some systems have more than one inhabited planet; but I regard that as superfluous to the argument]. - Most or all of the life in the universe is chemically based on carbon compounds. (There are many reasons for including this inference, which I consider to be quite ironclad, but I won't go into it here. My own surmise is that you could correctly say "Essentially all". Fortunately, nucleosynthesis in stars results in the production of a good deal of carbon).
- Add-in, not included by Arthur: All, or nearly all, life in the OU has evolved a genetic information recording system that functions analogously to the nucleic acid system that evolved on Earth, although specific details vary considerably.
- Far and away most life in the OU is constructed of cells, although, again, the exact architecture varies considerably.
- Most life-bearing planets in the OU host only microbial life (single cell or small-aggregates of cells).
- A large number (but proportionally fewer) of the life-bearing planets in the OU also host multicellular life.
- At least some proportion of the biospheres that have evolved multicellular life have evolved "complex" multicellular organisms that conduct photosynthesis to utilize light energy directly (similar to Plants and other photosynthesizer macrobiota on Earth, such as "brown algae"); or that assume roles comparable to those of the Fungi and Animal kingdoms in the Earth biosphere (symbionts and parasites).
- On at least some of the biospheres that have evolved such "complex" multicellular "animals," some of them have evolved advanced motility, including analogs to skeletal (including exoskeletal) structure, musculature, nervous systems, and the beginnings of intelligence, in the sense of directed control by a "brain."
- With all intermediate levels occurring in numbers, some portion of the biospheres that have evolved such complex animal life have proceeded to the evolution of human-level intelligence, although exactly how that manifests varies considerably.
- Some portion of human-level intelligent life develops external symbolic manipulation analogous to language, and eventually culture, and then advanced science and technology. This gives organisms the ability to direct their own evolution from this point, at least to an extent.
- Some portion of the technological species develop artificial biohabitats and are no longer confined to the surfaces of their planets of origin. [I would adventure that we are on the cusp of this development, and that there is no guarantee we will proceed to it; presumably frequently in the past and future, beings at this level do not make this transition successfully or never even try, for whatever reason].
- Once at the level of "space-dwelling," most of the technological species proceed to colonize their star systems and later other stars, and to spread the form of life that originated on their planet to vast numbers of other locations in space, including but not limited to planets that did not and might never evolve life on their own, such that over time most of the life in the universe exists elsewhere than the planetary surfaces where it originated.
- There is virtually no natural limit to the expansion of life under the direction and impetus of intelligence; the future of the OU is for life to encompass a greater and greater proportion of the available locations where sustaining life is possible until some saturation level is reached in the distant future. [Comment: even if this development is relatively rare, it is a threshold; once it occurs, it tends to lead to a permanent change in the course of the development life over a very wide region of space, potentially including multiple galaxies before bumping into others similarly situated, because plausible rates of expansion of such extended biospheres entail small fractions of the age of the planets and galaxies in which they originate. So, ultimately, if this phase occurs at all, it will tend to fill all the available space everywhere].
17 December 2020
Wallace Arthur's «The Biological Universe» and the role of human-level intelligence in the future of life in the universe
Red Dwarf stars and the Long Range Future of Life in the Universe
Posted this as an answer to a question, but it might conceivably be of interest to some people on its own.
06 December 2020
The protein coding problem... one of the great conundra of biology... SOLVED
02 December 2020
Sous vide (something other than politics!)
25 November 2020
24 November 2020
Erasmo Acosta on the implications of the Fermi Principle and the future of man
23 November 2020
Some thoughts on whether K stars are more likely to be the energy centers for living worlds than G stars, and some implications
21 November 2020
A pretty bleak picture
"The news today remains Trump's unprecedented attempt to steal an election in which voters chose his opponents, Democratic candidate Joe Biden and his running mate, Senator Kamala Harris, by close to 6 million votes, so far. A close second to that news is that the leadership of the Republican Party is not standing up to the president, but is instead seemingly willing to let him burn down the country to stay in office.
"Never before in our history has a president who has lost by such a convincing amount tried to claw out a win by gaming the system. Biden has not only won the popular vote by more than any challenger of an incumbent since Franklin Delano Roosevelt's win in 1932, but also has won crucial states by large margins. He is ahead by more than 80,000 votes in Pennsylvania, almost 160,000 votes in Michigan, and between 11,000 and 34,000 each in Georgia, Wisconsin, Arizona, and Nevada."
14 November 2020
Please read HCR's letter. Wow.
07 November 2020
This land is your land / Pete Seeger on the National Mall
01 November 2020
Please read Heather Cox Richardon's Hallowween "Letter from an American"
28 October 2020
Some Reflections on the (Fingers Crossed) Post Trump Era
18 October 2020
A sort of secular homily "What, then, must we do?"
• With the Trump campaign in what sure looks like collapse, perhaps we in the resistance to him need to take a look at a few things. I'll try to keep this brief. The title of my little homily was the title of a book by Gar Alperowitz. I think it comes from British utilitarianism, which essentially held that it is, always, the essential question of any and all politics.
We, as a nation and as progressives within it, are very lucky it was Trump, and not a competent right wing populist demagogue who was more than willing to trash norms, laws and even the Constitution to get what he wanted. Keyword competent, because of course Trump has been all the rest of that. We would not be looking at getting rid of him by means of a MERE election otherwise, of that you can be absolutely certain. The fact is, we dodged a bullet, and it's given us an opportunity. We probably won't get another, so we'd better make the best of this one.
We have to confront the reasons a Trumplike figure could win in 2016, and develop a comprehensive strategy of what we need to do to repair the degraded state of our society that made it possible. We have on the one hand the right wing enterprise to dismantle whatever extent of social democracy we had, from 1945 to 1975 or so, including remaking the courts into an almost Ayn Randian objectivist body intended to obstruct any reconstruction of that system, let alone progress in it. This is probably our biggest problem going forward in trying to do all the things we need to do to get our country functioning and addressing the real threats to our continued thriving as a nation... climate change, radical wealth disparity, inadequate public services. But we have also failed at developing an ethos that people can believe in. More than half of Americans think tariffs are the way to get jobs back after "globalization," and think deporting more "illegal aliens" will make them better off. We, as progressives, have to not only do a better job of messaging, but do a much better job of actually developing policies that will convince people who didn't study economics in college, don't work in the "new economy," and have watched their standard of living steadily falling over at least the last 40 years. And not just convince them, but actually deliver not just policies, but actually transformation. Development, infrastructure, research, and services that transform lives. Policies that not only promise, but actually deliver better jobs, more services where they live, better and fairer trade, industrial, and tax policies so that American products actually can compete in the world, and American wages are not only competitive, but matched by world class social services that make ordinary peoples' lives more liveable and less of a struggle. This is the mission of our politics. Things like democratizing workplaces, promoting a Green New Deal like nothing the world has ever seen, to develop renewable technologies and infrastructure that will not only be the envy, but quite literally the model and engine of the same development and equities worldwide. And we have to do this very quickly. Time is short. We have quite literally wasted the last 20 years, accomplishing almost nothing of what we need to do. We need to remake the American economy so quickly that everyone gets swept up in the enterprise, and becomes invested in it, believes in it because it is about them and for them.
This is an absolutely enormous challenge. Comparable at least to World War II. But if we fail in it, our politics will just whipsaw right back to right wing populism, and next time, it will probably mean dictatorship, full-on Depression, and a very, very bleak future for North America and much of the rest of the World.
Somehow we have to convey this vision, make this a reality, pull our leaders into a mode of leadership where they understand and seriously want to try to accomplish these kinds of goals. I fear we are not up to it. But, friends, we have no choice. This is our challenge. Our one chance. Our planet is in deep trouble and only by remaking the entire enterprise of our civilization towards a sustainable, equitable, and transformative economy with realistic but extremely ambitious goals can we hope to remain a thriving and prosperous society while we make the transformations necessary to proceed through the rest of this century.
I am 67. It is not my generation who must lead this. Biden really is, at best, transitional. But we need to convince him, and everyone who works for him, to do what it takes to make it possible for the next generations to get busy and do this, sweeping ethnonationalism and plutocracy away in a whirlwind of new enterprise that comes from the people and works for the people.
I am convinced this is possible. Not confident it will happen. But if we don't have a shared vision and determination it certainly won't, whereas if we do, we just might be able to do it.
27 September 2020
Misattribution of Fauci quote
Fauci, sidelined by Trump, takes the gloves off and tells it like it is
26 September 2020
My top Constitutional Amendments... if and when they become possible.
Ginsburg Judicial Reform Act of 2021 (proposed key provisions)
22 September 2020
This may not be workable, but, well, we need to think of ways to proceed in our predicament
David Plouffe on Democratic strategy
12 September 2020
Unhealthy Air in Portland
10 September 2020
Letter from an American
Once again, I'm urging folks to read Heather Cox Richardson's (near-) daily Letter from an American. You can't find a better "instant history" commentary anywhere out there. I have a couple of friends who avoid all the toxicity of cable TV and just read her letter.
08 September 2020
Re: Heatner Cox Richardson's letters
As a teaser for why you should subscribe on Facebook or wherever you can to Heather Cox Richardson's almost-daily summaries of the state of our union.
07 September 2020
Heather Cox Richardosn September 6, 2020
Earlier this week, New York Times columnist Farhad Manjoo warned that American democracy is ending. He pointed to political violence on the streets, the pandemic, unemployment, racial polarization, and natural disasters, all of which are destabilizing the country, and noted that Republicans appear to have abandoned democracy in favor of a cult-like support for Donald Trump. They are wedded to a narrative based in lies, as the president dismantles our non-partisan civil service and replaces it with a gang of cronies loyal only to him. He is right to be worried. Just the past few days have demonstrated that key aspects of democracy are under attack. Democracy depends on the rule of law. Today, we learned that Postmaster General Louis DeJoy, who rose to become a Cabinet official thanks to his prolific fundraising for the Republican Party, apparently managed to raise as much money as he did because he pressured employees at his business, New Breed Logistics, to make campaign contributions that he later reimbursed through bonuses. Such a scheme is illegal. A spokesman said that Dejoy "believes that he has always followed campaign fundraising laws and regulations," but records show that many of DeJoy's employees only contributed money to political campaigns when they worked for him. Democracy depends on equality before the law. But Black and brown people seem to receive summary justice at the hands of certain law enforcement officers, rather than being accorded the right to a trial before a jury of their peers. In a democracy, voters elect representatives who make laws that express the will of the community. "Law enforcement officers" stop people who are breaking those laws, and deliver them to our court system, where they can tell their side of the story and either be convicted of breaking the law, or acquitted. When police can kill people without that process, justice becomes arbitrary, depending on who holds power. Democracy depends on reality-based policy. Increasingly it is clear that the Trump administration is more concerned about creating a narrative to hold power than it is in facts. Today, Trump tweeted that "Our Economy and Jobs are doing really well," when we are in a recession (defined as two quarters of negative growth) and unemployment remains at 8.4%. This weekend, the drive to create a narrative led to a new low as the government launched an attempt to control how we understand our history. On Friday, the administration instructed federal agencies to end training on "critical race theory," which is a scary-sounding term for the idea that, over time, our laws have discriminated against Black and brown people, and that we should work to get rid of that discriminatory pattern. Today, Trump tweeted that the U.S. Department of Education will investigate whether California schools are using curriculum based on the 1619 Project from the New York Times, which argues that American history should center on the date of the arrival of the first enslaved Africans to Chesapeake shores. Anyone using such curriculum, he said, would lose funding. Government interference in teaching our history echoes the techniques of dictatorships. It is unprecedented in America. Democracy depends on free and fair suffrage. The White House is trying to undermine our trust in the electoral system by claiming that mail-in ballots can be manipulated and will usher in fraud. While Trump has been arguing this for a while, last week Attorney General William Barr, a Trump loyalist, also chimed in, offering a false story that the Justice Department had indicted a Texas man for filling out 1700 absentee ballots. In fact, in 2017, one man was convicted of forging one woman's signature on a mail-in ballot in a Dallas City Council race. Because mail-in ballots have security barcodes and require signatures to be matched to a registration form, the rate of ballot fraud is vanishingly small: there have been 491 prosecutions in all U.S. nationwide elections from 2000 to 2012, when billions of ballots were cast. Interestingly, an intelligence briefing from the Department of Homeland Security released Friday says that Russia is spreading false statements identical to those Trump and Barr are spreading. The bulletin says that Russian actors "are likely to promote allegations of corruption, system failure, and foreign malign interference to sow distrust in Democratic institutions and election outcomes." They are spreading these claims through state-controlled media, fake websites, and social media trolls. At the same time, we know that the Republicans are launching attempts to suppress Democratic votes. Last Wednesday, we learned that Georgia has likely removed 200,000 voters from the rolls for no reason. In December 2019, the Georgia Secretary of State said officials had removed 313,243 names from the rolls in an act of routine maintenance because they were inactive and the voters had moved, but nonpartisan experts found that 63.3% of those voters had not, in fact, moved. They were purged from the rolls in error. And, in what was perhaps an accident, in South Carolina, voters' sample ballots did not include Democratic candidates Joe Biden and Kamala Harris, although they did include the candidates for the Green, Alliance, and Libertarian parties. When The Post and Courier newspaper called their attention to the oversight, the State Election Commission, which is a Republican-majority body appointed by a staunch Trump supporter, updated the ballots. Democracy depends on the legitimacy of (at least) two political parties. Opposition parties enable voters unhappy with whichever group of leaders is in power to articulate their positions without undermining the government itself. They also watch leaders carefully, forcing them to combat corruption within their ranks. This administration has sought to delegitimize Democrats as "socialists" and "radicals" who are not legitimate political players. Just today, Trump tweeted: "The Democrats, together with the corrupt Fake News Media, have launched a massive Disinformation Campaign the likes of which has never been seen before." For its part, the Republican Party has essentially become the Trump Party, not only in ideology and loyalty but in finances. Yesterday we learned that Trump and the Republican National Committee have spent close to $60 million from campaign contributors on Trump's legal bills. Matthew Sanderson, a campaign finance lawyer for Republican presidential candidates, told the New York Times, "Vindicating President Trump's personal interests is now so intertwined with the interests of the Republican Party they are one and the same — and that includes the legal fights the party is paying for now." The administration has refused to answer to Democrats in Congress, ignoring subpoenas with the argument that Congress has no power to investigate the executive branch, despite precedent for such oversight going all the way back to George Washington's administration. Just last week, a federal appeals court said that Congress has no power to enforce a subpoena because there is no law that gives it the authority to do so. This essentially voids a subpoena the House issued last year to former White House counsel Don McGahn, demanding he testify about his dealings with Trump over the investigation into the ties of the Trump campaign to Russia. (The decision will likely be challenged.) On September 4, U.S. Postal Service police officers refused Florida Congresswoman Debbie Wasserman Schultz (D-FL) entry to one USPS facility in Opa-Locka, Florida and another in Miami. Although she followed the procedures she had followed in the past, this time the local officials told her that the national USPS leadership had told them to bar her entry. "Ensuring only authorized parties enter nonpublic areas of USPS facilities is part of a Postal Police officer's normal duties, said Postal Inspector Eric Manuel. Wasserman Schultz is a member of the House Oversight and Reform Committee. And finally, democracy depends on the peaceful transition of power. Trump has repeatedly suggested that he will not leave office because the Democrats are going to cheat. So we should definitely worry. But should we despair? Absolutely not. Convincing people the game is over is one of the key ways dictators take power. Scholars warn never to consent in advance to what you anticipate an autocrat will demand. If democracy were already gone, there would be no need for Trump and his people to lie and cheat and try to steal this election. And I would certainly not be writing this letter. Americans are coming together from all different political positions to fight this attack on our democracy, and we have been in similar positions before. In 1858, Abraham Lincoln spoke under similar circumstances, and noted that Americans who disagreed on almost everything else could still agree to defend their country, just as we are now. Ordinary Americans "rose each fighting, grasping whatever he could first reach---a scythe---a pitchfork-- a chopping axe, or a butcher's cleaver," he said. And "when the storm shall be past," the world "shall find us still Americans; no less devoted to the continued Union and prosperity of the country than heretofore." —- Notes: https://www.nytimes.com/2020/09/03/opinion/im-doomsday-prepping-for-the-end-of-democracy.html https://www.washingtonpost.com/business/2020/09/04/usps-dejoy-wasserman-schultz/ https://www.cnn.com/2020/09/02/politics/georgia-voter-rolls-report/index.html https://amp.cnn.com/cnn/2020/09/06/politics/trump-education-department-1619-project/index.html https://www.nytimes.com/2020/09/05/us/politics/trump-campaign-funds-legal-bills.html https://www.politico.com/news/2020/08/31/dc-circuit-panel-kills-house-subpoena-power-406140 https://www.lawfareblog.com/dc-circuit-panel-rules-against-house-mcgahn-case You're on the free list for Letters from an American. For the full experience, become a paying subscriber. © 2020 Heather Cox Richardson Unsubscribe |