917 Matching Annotations
  1. Mar 2021
  2. Feb 2021
  3. Jan 2021
  4. Dec 2020
    1. A scientist who does not utilize the scientific method is as much use as a carpenter who cannot make chairs or a plumber who cannot fix toilets. A science that exists as a fixed absolute, whose premises are not to be questioned, whose data is not to be examined and whose conclusions are not to be debated, is a pile of wood or a leaky toilet. Not the conclusion of a process, but its absence.

      Understanding science is a process.

  5. Nov 2020
    1. Gov. Kristi Noem defended her hands-off approach to managing the deadly COVID-19 pandemic while addressing lawmakers earlier this week and called mandatory stay-at home orders "useless" in helping lower the spread.

      Take away: Lower COVID-19 spread occurred after stay-at home orders were issued. Room for debate exists on how restrictive lockdowns should be.

      The claim: Mandatory stay-at home orders are "useless" in helping lower the spread of SARS-CoV-2.

      The evidence: Two publications showed that lower COVID-19 spread occurred after stay-at home orders were issued (1, 2). Hospitalizations were lower than predicted exponential growth rates after implementation of stay-at home orders (3). Some caveats to consider include that it is impossible to tease apart the effects of the stay-at home orders from other measure implemented simultaneously with stay-at home orders such as increased hygiene measures, social distancing guidelines, and school closures. It is also impossible to conclusively state that the effect is from the stay-at home order and not the natural progression of the disease.

      The comparison between Illinois with stay-at home orders and Iowa without stay-at home orders resulted in an estimated 217 additional COVID-19 cases in Iowa over the course of a month (2). This small number raises the question, "are stay-at home orders worth it?" It is important to remember that comparison of Iowa and Illinois is the comparison of two social distancing strategies. Stay-at home orders close everything and then write the exceptions that can remain open. Iowa took the approach of leaving everything open except what the government choose to close (4). Some businesses in Iowa were still closed and many federal guidelines were still followed. A negative control showing disease progression without any mitigation measures does not exist in published literature.

      Sources:

      1 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7246016/

      2 https://pubmed.ncbi.nlm.nih.gov/32413112/

      3 https://www.desmoinesregister.com/story/news/2020/04/07/iowa-equivalent-stay-at-home-order-coronavirus-kim-reynolds/2961810001/

      4 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7254451/

    1. We have designed a dimeric lipopeptide fusion inhibitor that blocks this critical first step of infection for emerging coronaviruses and document that it completely prevents SARS-CoV-2 infection in ferrets.

      The takeaway: Dimeric lipopeptide fusion inhibitor prevented SARS-CoV-2 infection in all six ferrets tested. Much more work is needed before this could be used in humans.

      The claim: Treatment of ferrets with a dimeric lipopeptide fusion inhibitor completely prevents SARS-CoV-2 infection in ferrets.

      The evidence: Per Figure 3, SARS-CoV-2 was detected in all three animals inoculated with the virus, all six animals treated with a placebo, and none of the animals treated with the dimeric lipopeptide fusion inhibitor (1). Animals treated with dimeric lipopeptide fusion inhibitor did not mount an immune response to SARS-CoV-2 while an immune response was seen in inoculated animals and placebo treated animals (Figure 4).

      More research is needed before this treatment can be used in humans. This preliminary study showed that in a small sample of animals which do not typically show COVID symptoms, SARS-CoV-2 infection was blocked by the dimeric lipopeptide fusion inhibitor. This paper describes the first step in a long journey. Before a new treatment is approved for use in humans, Phase I, II and III clinical trials must be completed (2) which includes showing that a treatment does no harm to healthy humans and proving that it works in humans. This work also needs peer-review in a published journal which may occur with time.

      Sources:

      1) https://www.biorxiv.org/content/10.1101/2020.11.04.361154v1.full.pdf

      2) https://www.fda.gov/patients/drug-development-process/step-3-clinical-research

  6. Oct 2020
    1. Weber notes that according to any economic theory that posited man as a rational profit-maximizer, raising the piece-work rate should increase labor productivity. But in fact, in many traditional peasant communities, raising the piece-work rate actually had the opposite effect of lowering labor productivity: at the higher rate, a peasant accustomed to earning two and one-half marks per day found he could earn the same amount by working less, and did so because he valued leisure more than income. The choices of leisure over income, or of the militaristic life of the Spartan hoplite over the wealth of the Athenian trader, or even the ascetic life of the early capitalist entrepreneur over that of a traditional leisured aristocrat, cannot possibly be explained by the impersonal working of material forces,

      Science could learn something from this. Science is too far focused on the idealized positive outcomes that it isn't paying attention to the negative outcomes and using that to better define its outline or overall shape. We need to define a scientific opportunity cost and apply it to the negative side of research to better understand and define what we're searching for.

      Of course, how can we define a new scientific method (or amend/extend it) to better take into account negative results--particularly in an age when so many results aren't even reproducible?

    1. A scientific review of the science behind lockdown concludes the policy was a MISTAKE & will have caused MORE deaths from Covid-19

      Take Away: The new scientific paper confirms earlier modeling work and should not be interpreted as a detailed prediction for future deaths due to the ongoing pandemic.

      The Claim: "A scientific review of the science behind lockdown concludes the policy was a MISTAKE & will have caused MORE deaths from Covid-19"

      The Evidence: The scientific process involves replication and confirmation of experiments and studies. A new paper replicates and expands on an early modeling study of the COVID-19 pandemic in England (1). Their findings support the earlier results. However, there are limitations to the replication paper, which does not accurately reflect the current state of the pandemic response and does not make detailed predictions for a second wave of infections and deaths.

      A recent expert response to the paper further explains (2):

      "It needs to be stressed that all the simulations assume that interventions are only in place for 3 months (18th April – 18th July) and then completely relaxed. This gives rise to a strange set of scenarios where a second wave is allowed to progress in an uncontrolled manner."

      “It is this that leads to the counter-intuitive headline finding “that school closures would result in more overall covid-19 deaths than no school closures” – actually what the authors find is that a short period of intense lock-down (including the closure of schools) leads to a large second wave if it is allowed to run with no controls. To be fair the authors do highlight this in the paper, but it is not in the reported press release." -Prof Matt Keeling, Professor of Populations and Disease, University of Warwick

      Sources:

      (1) https://www.bmj.com/content/371/bmj.m3588

      (2) https://www.sciencemediacentre.org/expert-reaction-to-reanalysis-of-model-used-for-imperial-report-9-and-impact-of-school-closures/

    1. In testimony before US Congress on March 11, 2020, members of the House Oversight and Reform Committee were informed that estimated mortality for the novel coronavirus was 10-times higher than for seasonal influenza. Additional evidence, however, suggests the validity of this estimation could benefit from vetting for biases and miscalculations. The main objective of this article is to critically appraise the coronavirus mortality estimation presented to Congress. Informational texts from the World Health Organization and the Centers for Disease Control and Prevention are compared with coronavirus mortality calculations in Congressional testimony. Results of this critical appraisal reveal information bias and selection bias in coronavirus mortality overestimation, most likely caused by misclassifying an influenza infection fatality rate as a case fatality rate.

      Take away: COVID-19 death rate is worse than seasonal influenza death rate.

      The claim: Coronavirus mortality was over estimated as 10X worse than seasonal influenza to congress due to misclassifying influenza infection fatality rate as a case fatality rate.

      The evidence: Comparing infection fatality ratio (IFR) and case fatality ratio (CFR) is an apples to oranges comparison (1). Case fatality ratios present higher death percentages than infection fatality ratios. At the same time, it is important to understand that COVID-19 and seasonal influenza CFR and IFR numbers are rough approximations of reality and the potential for errors exist in all calculations.

      The seasonal IFR rate of influenza was overstated in this article. The claim that seasonal influenza IFR and COVID-19 IFR are the same is based on seasonal influenza IFR of 0.1%. Per the WHO report, seasonal influenza “is usually well below 0.1%” (2). This statement was translated into “0.1% or lower” and then “the WHO also reported that 0.1% is the IFR of seasonal influenza, not the CFR of seasonal influenza as reported in the NEJM editorial” (3).

      The article is questioning whether COVID-19 is worse than seasonal influenza due to confusion with IFR and CFR. The article overstated influenza IFR to arrive at the conclusion that COVID-19 and seasonal influenza death rates are the same.

      Comparison of influenza and COVID-19 deaths:

      Influenza CFR = 0.1-0.2%

      (Based on CDC data # deaths / # symptomatic cases, 4).

      COVID-19 CFR = 2.8%

      (In the USA as of 10/6/2020. Includes asymptomatic cases and may therefore be an underestimate of true CFR, 5-6)

      It is also important to note that COVID-19 disease is ongoing with the potential for some of the 7,461,206 cases to die from COVID-19 later. Only 2,935,142 cases in the US are reported as recovered as of 10/6/2020.

      Even with the inclusion of asymptomatic cases in the death rate calculation for COVID-19, deaths/cases is at least 10X higher than the deaths/cases calculation of symptomatic influenza based on CDC data.

      Sources:

      1 https://pubmed.ncbi.nlm.nih.gov/32234121/

      2 https://www.who.int/docs/default-source/coronaviruse/situation-reports/20200306-sitrep-46-covid-19.pdf?sfvrsn%3d96b04adf_4

      3 https://www.cambridge.org/core/journals/disaster-medicine-and-public-health-preparedness/article/public-health-lessons-learned-from-biases-in-coronavirus-mortality-overestimation/7ACD87D8FD2237285EB667BB28DCC6E9/core-reader

      4 https://www.cdc.gov/flu/about/burden/index.html#:~:text=While%20the%20impact%20of%20flu,61%2C000%20deaths%20annually%20since%202010

      5 https://coronavirus.iowa.gov/pages/case-counts

      6 https://coronavirus.jhu.edu/map.html

  7. Sep 2020
  8. Aug 2020
    1. “In 2004, Cleveland Clinic physiologist Guang Yue wanted to know if merely thinking about lifting weights was enough to increase strength. Study subjects were divided into four groups. One group tried to strengthen their finger muscles with physical exercise; one tried to strengthen their finger muscles by only visualizing the exercise; another tried to increase arm strength through visualization; while the last group did nothing at all. The trial lasted twelve weeks.When it was over, those who did nothing saw no gains. The group that relied on physical training saw the greatest increase in strength-at 53 percent. But it’s the mental groups where things got curious. Folks who did no physical training but merely imagined their fingers going through precise exercise motions saw a 35 percent increase in strength, while the ones who visualized arm exercises saw a 13.5 percent increase in strength.”Let’s review — these participants did NOTHING BUT VISUALIZING and saw an increase of up to 35% in strength!But things are all the more convincing when you consider that a few years before Yue’s studies, neuroscientists found no difference between performing an action and merely imagining oneself performing that action-the same neuronal circuits fire in either case.

      Experiments have shown that simply visualizing an can have great impacts.

    1. @who published a massive review/meta-analysis of interventions for flu epidemics in 2019, found "moderate" evidence AGAINST using masks.

      Take away: In their 2019 report the WHO actually recommended for, not against, the use of masks in severe influenza epidemics or pandemics, contrasting the statement made in this tweet. Further, recent evidence overwhelmingly supports the benefit of masks for preventing the spread of SARS-CoV2, the virus that causes COVID-19.

      The claim: Overall the claim here appears to be that masks are ineffective against the spread of SARS-CoV2, the virus that causes the clinical syndrome known as COVID-19. The evidence used in support of this claim is that “the WHO found ‘moderate’ evidence AGAINST using masks” in their 2019 report on the use of non-pharmaceutical interventions for mitigating influenza pandemics.

      The evidence: This overall claim is poorly supported by data and the evidence used to support this claim is incorrectly characterized by the claimant. Narrowly, the claim that the WHO recommended against mask use is patently false. In their report, the WHO reviewed 10 separate studies and did conclude that there was scant evidence that masks significantly decreased spread of the flu. However, they found no evidence that masks increased spread, and based on mechanistic plausibility (i.e. masks are barriers that prevent droplets from passing between people) and the low risk/high reward, they made a conditional recommendation for mask use in severe influenza epidemics or pandemics.

      While influenza does not behave exactly like the SARS-CoV2 virus, the similarities in mode of transmission make it reasonably likely that masks would also have protective effects against the spread of this virus is well. The best evidence is hard data, and that too increasingly points to the benefit of masks for slowing down or preventing the transmission of SARS-CoV2. A recent summary of that data is available here.

  9. Jul 2020
  10. Jun 2020
  11. May 2020
  12. Apr 2020
  13. Mar 2020
  14. Jan 2020
  15. Nov 2019
  16. Sep 2019
  17. Feb 2019
  18. Dec 2018
  19. Jul 2018
    1. What about people who don't have PhD's? Are they scientists, too? In any world in which credentials matter, the answer is no. (I describe a major exception to the rule below.) Just like getting an MD or a JD is a prerequisite to being called a doctor or a lawyer, in general, getting a PhD in the natural sciences is the prerequisite to being called a scientist.
  20. Mar 2018
  21. Sep 2017
    1. Kuhn (1970, p. 167) commented that science education tends to elide the processthrough which knowledge has been constructed, whereas students of other subjectsare exposed to varying interpretations over time. As a result, he suggested, sciencestudents are blind to the history of their subject, seeing it only as unproblematicprogress. The interview data suggest that this is indeed a point of difference betweenthe ‘arts’ and ‘science’ students in this sample. While both of them tend to have adualistic view of science itself, the ‘arts’ students seem to be more at ease with arelativistic view of knowledge in history.

      Kuhn on lack of training science students receive on how knowledge is constructed.

  22. Jun 2017
  23. Apr 2017
  24. Feb 2017
    1. systematic

      Although, as Whately points out, Quintilian was systematic, I get the distinct impression that, perhaps beginning with Blair and Campbell, we have moved to a more technical, systematized, psychological form of rhetoric.

      Did the scientific method really dip that far into the realm of rhetoric?

    1. mechanistic approach

      "ars est celare artem: art consists in concealing art"

      I do not dig this mechanical, technical, scientific method dissection of writing. Unfortunately, this article is filled with this pre-Freudian crap. You wouldn't tear Raphael a new one because he painted The School of Athens figures in the wrong order.

      Are these mechanics the result of the scientific method?

  25. Jan 2017
  26. Oct 2016
  27. Sep 2016
    1. frame the purposes and value of education in purely economic terms

      Sign of the times? One part is about economics as the discipline of decision-making. Economists often claim that their work is about any risk/benefit analysis and isn’t purely about money. But the whole thing is still about “resources” or “exchange value”, in one way or another. So, it could be undue influence from this way of thinking. A second part is that, as this piece made clear at the onset, “education is big business”. In some ways, “education” is mostly a term for a sector or market. Schooling, Higher Education, Teaching, and Learning are all related. Corporate training may not belong to the same sector even though many of the aforementioned EdTech players bet big on this. So there’s a logic to focus on the money involved in “education”. Has little to do with learning experiences, but it’s an entrenched system.

      Finally, there’s something about efficiency, regardless of effectiveness. It’s somewhat related to economics, but it’s often at a much shallower level. The kind of “your tax dollars at work” thinking which is so common in the United States. “It’s the economy, silly!”

  28. Aug 2016
    1. Performance CategoryDesign Categoriesi. StructureFrame design, shape and materials –for functionii. MobilityThrusters: number, power, orientationiii. SensorsCameras, lights, sonar, touch sensors, compass, GPSiv. ToolsArms, claws, rakes, wrenches, hammersv. Ranging DistanceTether length: waterproofing required vi. Buoyancy/ BallastFixed or variable, location and materialsvii. ControlsRC via wire or signal via fibre optic cableviii. Other?Depends on the specific mission

      Are you doing science projects? Maybe you can use an old mission scope to have students ask questions about. That way some of the questions we will need to face will be answered before we actually get the mission for this year.

  29. Jul 2016
    1. Page 187 On hyper authorship

      "hyper authorship” is an indicator of "collective cognition" in which the specific contributions of individuals no longer can be identified. Physics has among the highest rates of coauthorship in the sciences and the highest rates of self archiving documents via a repository. Whether the relationship between research collaborators (as indicated by the rates of coauthorship) and sharing publications (as reflected in self archiving) holds in other fields is a question worth exploring empirically.