What’s With the Hotmail Spam Filter?

I maintain a Hotmail account. It is convenient for those subscriptions, registrations, and other sign-ups that, should my account get inundated by spam, I could easily abandon.

Over the last month, I have noticed that the spam filter consistently misses obvious spam. Misses it even after the offending topic and approach have been marked as spam and reported. Are these spammers paying a premium for delivery? Or are the Hotmail coders just missing the boat?

My Yahoo! and gmail accounts work fine. If anything, their spam filters are a tad too aggressive. But once marked, a spam approach never succeeds again.

It’s a Jungle Out Here

I wrote a while ago about how my wiki was hacked. All that was posted was a bunch of links to what looked like pharmaceutical sites. I did not follow any of the links.

At the time, I switched from PHPWiki to TikiWiki because the latter has real security. I did keep the old wiki around. That was a mistake. A similar hacking has occurred, so the old wiki has been deleted. No hacking allowed.

By the way, I also updated my favicon (it shows up next to the URL) with a cool Saturn shot.

Star Party I

As I wrote earlier, we donated a star viewing party for our daughter’s school. Tonight was the targeted night.

We had planned to have the event several weeks ago but we were worried about rain and clouds (of course). Based on the forecasts from the NWS and Weather.com, we cancelled the event on the Thursday before the Saturday event. Up to the afternoon forecast on Saturday “mostly cloudy” skies were forecast. I did note that the Mar Vista Clear Sky Clock predicted clear skies. And the skies were clear. I got some great images of Saturn that night.

This time, I refused to bow to the forecast. The day was mostly cloudy. I spoke with our guests in the afternoon and we decided to wait to make a decision. NWS said partly cloudy, 20% chance of rain. Clear Sky Clock said brief clearing around and just after twilight, then cloudy. It cleared at 5:30 pm and we started the preparations. There was a low clouds scare at 6:30, but then the guests called at 7:00, it looked good.

Then the clouds arrived, followed by our guests. We got a couple of nice views of Saturn and Mars, but no real chance to Explore the Night Sky as we had promised. We have rescheduled.

The guests left and we put everything away. Just in time. RAIN. Yes, rain. Not 10 minutes after the observatory was closed, the 8″ scope put away, the laptop moved inside, it rained. If we had spoken with our guests for another 10 minutes there would have been untold damage. But the good Lord was looking our for us and nothing was damaged.

But just as I am committed to observe and image in the face of light pollution, I will not postpone a star party without unconditional prediction of clouds and rain.

New Themes

I have added a some new themes to the blog, and added a plug-in that will allow you to change between themes. I have been using a slightly customized version of Connections, but I found I wanted something without the backgound images. The current default theme is Neat!, and I like how the horsehead and flame nebulae look at the top. Also installed are Benevolence, Minima Plus, and the two default WordPress themes.

You can switch between themes using the theme switcher. As always, comments are welcome.

The Internet Makes You Smart

I read a good article in Scientfic American the other night. The point of the article was that social learning among great apes (orangutans in the article) was critical to learing higher level skills. And that without social interaction, these skills were not learned. The key hypothesis in the article is

My own explanation, which is not incompatible with these other forces, puts the emphasis on social learning. In humans, intelligence develops over time. A child learns primarily from the guidance of patient adults. Without strong social–that is, cultural–inputs, even a potential wunderkind will end up a bungling bumpkin as an adult.

The core learning method is interaction with others. The area they studied had a high number of orangutans, causing more social interaction than is normal among these apes. The apes they studied used tools much more than other apes.

One of our first finds in this unlikely setting astonished us: the Suaq orangutans created and wielded a variety of tools. Although captive red apes are avid tool users, the most strik­ing feature of tool use among the wild orangutans observed until then was its absence.

The increased use of tools does not represent a higher intelligence among this group of apes.

We doubt that the animals at Suaq are intrinsically smarter: the observation that most captive members of this species can learn to use tools suggests that the basic brain capacity to do so is present.

In looking at this behaviour, they looked at a number of reasons why it would occur in this group. In an well presented analysis (you need to read the article), they show that the reason is clearly cultural learning. The orangutans learn from interaction with other orangutans. Social interaction increases intelligence.

So I draw the conclusion that the internet increases human intelligence. Why?

  • The internet is primarly a means of interaction between people
  • It enables interaction without regard to geographic separation
  • Communities develop that allow people with similar interests to share their skills
  • My own experience in astrophotography is that my skills are better because of what I have learned from others in internet newsgroups

I wrote about the benefit of newsgroups in an earlier post. This Scientific American article gives a scientific basis to the benefit for all of us of collaboration enabled by the internet. So surfing and chatting and blogging and newsgrouping makes you smarter! Almost an invitiation to do this at work.

Global Warming Alarmism — The Anti-Science

There is an excellent op-ed piece in the Wall Street Journal today, and it is available free at OpinionJournal. In extraordinarily clear terms Richard Lindzen puts forward the case that the hysteria not only leads to exaggerated claims, it leads to suppression of good science.

The answer has much to do with misunderstanding the science of climate, plus a willingness to debase climate science into a triangle of alarmism. Ambiguous scientific statements about climate are hyped by those with a vested interest in alarm, thus raising the political stakes for policy makers who provide funds for more science research to feed more alarm to increase the political stakes. After all, who puts money into science–whether for AIDS, or space, or climate–where there is nothing really alarming? Indeed, the success of climate alarmism can be counted in the increased federal spending on climate research from a few hundred million dollars pre-1990 to $1.7 billion today. It can also be seen in heightened spending on solar, wind, hydrogen, ethanol and clean coal technologies, as well as on other energy-investment decisions.

So we need alarmism for more money. That is an old political story. And where the money goes, goes the power, and where the power goes, comes corruption.

It isn’t just that the alarmists are trumpeting model results that we know must be wrong. It is that they are trumpeting catastrophes that couldn’t happen even if the models were right as justifying costly policies to try to prevent global warming.

If the models are correct, global warming reduces the temperature differences between the poles and the equator. When you have less difference in temperature, you have less excitation of extratropical storms, not more. And, in fact, model runs support this conclusion.

Not to mention double standards.

So how is it that we don’t have more scientists speaking up about this junk science? It’s my belief that many scientists have been cowed not merely by money but by fear. An example: Earlier this year, Texas Rep. Joe Barton issued letters to paleoclimatologist Michael Mann and some of his co-authors seeking the details behind a taxpayer-funded analysis that claimed the 1990s were likely the warmest decade and 1998 the warmest year in the last millennium. Mr. Barton’s concern was based on the fact that the IPCC had singled out Mr. Mann’s work as a means to encourage policy makers to take action. And they did so before his work could be replicated and tested–a task made difficult because Mr. Mann, a key IPCC author, had refused to release the details for analysis. The scientific community’s defense of Mr. Mann was, nonetheless, immediate and harsh. The president of the National Academy of Sciences–as well as the American Meteorological Society and the American Geophysical Union–formally protested, saying that Rep. Barton’s singling out of a scientist’s work smacked of intimidation.

All of which starkly contrasts to the silence of the scientific community when anti-alarmists were in the crosshairs of then-Sen. Al Gore. In 1992, he ran two congressional hearings during which he tried to bully dissenting scientists, including myself, into changing our views and supporting his climate alarmism. Nor did the scientific community complain when Mr. Gore, as vice president, tried to enlist Ted Koppel in a witch hunt to discredit anti-alarmist scientists–a request that Mr. Koppel deemed publicly inappropriate. And they were mum when subsequent articles and books by Ross Gelbspan libelously labeled scientists who differed with Mr. Gore as stooges of the fossil-fuel industry.

Read the whole thing. We need to get back to an open discussion on a scientific basis.

Saturn @ F40

I had a suprise clear night on Saturday, and being in-between on my set-up between an NP-101 and C-11, I only had my web camera available.

I have also just bought a 4x Televue Powermate that I wanted to try out. Thankfully the seeing turned to be ok. Saturn was the obvious target.

Saturn @ f40, April 8, 2006

The shot is 604 frames of about 1,800, stacked in Registax. I used the diadic rather than the linear wavelet sharpening in Registax. When I moved to Photoshop, I increased the bit resolution by 4x so I had more granularity to work with when sharpening with a high-pass filter and slight blurring to soften the grain.

As always, comments and suggestions are welcomed.

Wiki, Continued.

I wonder if I should move the wiki to the urbanimaging.com domain. That would make the content appropriate for the domain and perhaps provide a better forum for participation from others. I am certainly not going to make this complete by myself.

Current content includes information about how to connect a Televue NP-101 to a TCF-S and ST-10 should be captured more permanently.

Please sign up and contribute something.

Update: Removed duplicate content. Reminder to self, don’t blog while tired.

Robert McPherson, Rest in Peace

My brother-in-law, Robert McPherson, passed away last night. He is survived by his wife Stephanie and daughters Ainsley, Gwen, and Drew. He was a fine man and will be missed by all. Please keep him and his family in your prayers.