5 ms·
>"Quite the opposite, and that statement is obviously uninformed. The science behind dark matter is very precise and exact." From what I have seen they can get
by nonbel 8y ago
>"Quite the opposite, and that statement is obviously uninformed. The science behind dark matter is very precise and exact."
From what I have seen they can get precise post-dictions but not precise pre-dictions because there are so many free parameters (basically you can put dark matter wherever you need it).
>"I've given you the link to the complete articles and also highlighted the major points. Try to read and understand them fully, then search for more."
The claimed predictions from the 1970s and 1980s are not mentioned on that page.
Also, that "startswithabang" guy is more like a catholic inquisitor than a scientist. I wouldn't consider him a reliable source because this behavior indicates he lacks the required capacity for curiosity, he can only repeat what authority figures say:
"The blogger (@StartsWithABang) contacted @scilogscom on January 24 by replying to a 15-day old tweet that announced our blog’s move to the new domain. He tweeted “Bummed that @scilogscom is in the business of promoting contrarian scientist viewpoints.”, and asks the SciLogs.com community manager (@notscientific) “[Why] are you allowing @scilogscom to promote contrarian voices that undermine public understanding of [science]?”, adding “You have taken on “Dark Matter Crisis” blog, whose mission is to undermine all of physical cosmology & promote MOND.”
The two agreed to discuss the issue via email, with the blogger adding that he was “personally worried that you are promoting clicks & false controversy over quality science content”, and states that he is “very, VERY disappointed about this move that @scilogscom has made”.
By now the SciLogs.com community manager has explained to us what happened after these tweets. He and the publishing director responsible for SciLogs.com unfortunately assumed that the blogger’s criticism was justified. They decided to close our blog without conferring with others or asking us for a statement. After we complained about the discontinuation, they performed an internal investigation, which involved reaching out to astrophysicists and other people, and have realized that discontinuing our blog was a big mistake. We attribute SciLogs.com’s poor judgement to two factors: neither the community manager nor the publishing director has an (astro)physical background, it was the first time that SciLogs.com had experienced an attack against one of its blogs."
https://darkmattercrisis.wordpress.com/2013/03/08/the-dark-matter-crisis-continues-on-the-difficulties-of-communicating-controversial-science/ https://darkmattercrisis.wordpress.com/2013/03/08/the-dark-m...
Anyway, I can tell you know even less about this topic than me so let's leave it at that.
- deleted 8y ago[deleted]
- acqq 8y ago> The claimed predictions from the 1970s and 1980s are not mentioned on that page. They are mentioned, they just aren't elaborated: you have to do your own homework if you apparently "understand" the subject enough to claim your own opinion. A begin of that homework, however, as I've already written, you even have on the initial page that you chose to post, specifically: "2013: ΛCDM provides an excellent fit to the improved CMB data" As I've said, that's the "item 3" from the 5 item list, and it's ultimately confirmed by ESA's Planck satellite results in 2013. That is a strong confirmation. Note: more details and the timeline are on the very page you've initially posted. Ad hominems don't change the facts.
- nonbel 8y ago>"They are mentioned" No, they were not mentioned. If they were, you would be quoting it. >'"2013: ΛCDM provides an excellent fit to the improved CMB data" As I've said, that's the "item 3" from the 5 item list, and it's ultimately confirmed by ESA's Planck satellite results in 2013. That is a strong confirmation.' You have to read the entire quote. This "fit" was a post-diction, not a pre-diction: "in order to obtain a fit, we have had to nearly double the baryon density over what it was so confidently known to be before it wasn't." Post-dictions can be interesting as part of model development but are unable to confirm a model. The new, (possibly adjusted) model then need to be checked against new data.
- acqq 8y agoWhat is your support for that claim? Can you quote other sources? I can quote my sources: Here are documented two independent approaches in estimating baryonic density: one is calculations based on the Big Bang Nucleosynthesis D/H ratio and another one is the values measured by the satellites observing the SMB. Note the two decades of similar values using both approaches: https://lambda.gsfc.nasa.gov/education/graphic_history/baryonicd.cfm https://lambda.gsfc.nasa.gov/education/graphic_history/baryo... "There is general good agreement between the recent CMB and D/H+BBN determinations shown in the figure." I don't see the "double" anywhere there. And the values could be traced to all the sources mentioned there.