LorenCobb’s Activity

Today

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LorenCobb replied to the Climate Change board. 4 hours ago

Re: CO2 Increase is not Nemesis

Lordfoolman: I have NEVER claimed that CO2 had NO influence. My stance has always been that it was small. Natural factors... the oceanic churnings, cloud cover, solar effects, volcanic eruptions, and even orbital mechanics (over very long term) [more]

Sat Oct 18

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LorenCobb replied to the Macro Economic Trends and Risks board. 3:05 PM

Re: Mathematical model of Ebola

Totolapse: I would like to see that same plague scenario worked out for what happened [to the American Indians] in the Americas. I remember reading Cotton Mather's accounts of a 95% kill rate and was stunned as a teen. Only in Sci Fi had a kill [more]

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LorenCobb replied to the Macro Economic Trends and Risks board. 2:40 PM

Re: Mathematical model of Ebola

FLARAM: My one question about the talk is that you stated that wealthy societies are unlikely to go to war. This seems counter to my expectations. I tried searching for papers on this subject but came up short, any suggestions.

I [more]

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LorenCobb posted to the Apple User's Group board. 1:57 PM

Trackpad weirdness after update

Several days ago I updated Mavericks to the latest security (pre-Yosemite) update. I immediately noticed an unwelcome change in my magic trackpad's behavior. When I login after a long period of sleep, the system starts up as usual by asking for my [more]

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LorenCobb replied to the Atheist Fools board. 2:07 AM

Re: As if the Cruise-ship needed this bad press

MetroChick: I like Belize's response, which is essentially "Um, no, we're not going to have any part of that". Except for Belize, seems like lots of bad decisions all around about travel.

FWIW (very little, I realize) I [more]

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LorenCobb replied to the Macro Economic Trends and Risks board. 1:29 AM

Re: Mathematical model of Ebola

Qazulight: So you are saying the simple exponential model is on the table?

What? If I suggested that, then I apologize. I thought I had criticized their model for not handling spatial and income variation. Such a criticism does not [more]

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LorenCobb replied to the Macro Economic Trends and Risks board. 1:18 AM

Re: Mathematical model of Ebola

ChanceEldrDancer: I do not know if you are the same guy, but a Loren Cobb with a similar skill set gave a wonderful Ted Youth talk on Math and Peace. I suspect you were the speaker -- if so, you have my sincere congratulations.

Wow. I [more]

Fri Oct 17

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LorenCobb replied to the Macro Economic Trends and Risks board. 3:24 PM

Re: Mathematical model of Ebola

Qazu: This Math Model Is Predicting the Ebola Outbreak with Incredible Accuracy

No, it is not.

In forty years of working with epidemic models, I have seen too many claims of "incredible" accuracy -- all made during [more]

Thu Oct 16

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Boards Post

LorenCobb replied to the Macro Economic Trends and Risks board. 1:00 PM

Re: Deflation?

Bruce: I don't understand it [the fear of deflation] because, if oil prices drop, then people will have more money to buy other things. It is just who benefits from the changes in the price of oil. It is only if people "save" it that [more]

Tue Oct 14

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LorenCobb replied to the Retirement Investing board. 11:59 AM

Re: Free e-book:Pure Income Investing for Retirement

If I understand the Amazon page properly, this book is "free" only to subscribers to Kindle Unlimited, which costs $10 per month.

I am not about to add $120/year to my book budget. Is there some way I can just buy a regular Kindle [more]

Mon Oct 13

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Boards Post

LorenCobb replied to the Atheist Fools board. 6:53 PM

Re: Posner of the 7th Circuit

Canam: I have no idea who Judge Richard Posner is or what his beliefs are (Slate calls him a "conservative" appointed by Reagan) but I took a listen to some of his counter-arguments regarding marriage.

I have been reading [more]

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LorenCobb replied to the Atheist Fools board. 6:13 PM

Re: Speaking of commutes

Ooh, I think I can answer that one.

Due south from Four Corners, and just west of the New Mexico border, there is a zone inhabited by several hundred Navaho families. There are dirt roads criss-crossing this area, as can be seen in this [more]

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LorenCobb replied to the Apple User's Group board. 5:32 PM

Re: A8 archictecture?

I thought I read somewhere ... that the PC register (Program Counter aka instruction register)in the A8 architecture is not addressable. OK, it has been a long time since I looked into computer architecture, but it would be my guess that it is [more]

Sun Oct 12

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Boards Post

LorenCobb replied to the Climate Change board. 6:22 PM

Re: Unforced changes

Spinning: I am surprised you can find a significant 64 year cycle using data from 1870. This is 144 years of data, or slightly more than two cycles. Can you comment on what it means to only need two cycles to say that the cycle is statistically [more]

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LorenCobb replied to the Climate Change board. 2:48 PM

Re: Unforced changes

DB2: Delworth et al. looked at multidecadal Atlantic climate variability since 1870 and found a strong 65-year cycle...

By total coincidence, I spent the previous two days working on the question of whether or not there is an approx [more]

Sat Oct 11

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Boards Post

LorenCobb replied to the Apple User's Group board. 1:59 PM

Re: TV and wireless

HMA: While I get some shows through Apple TV, I have been investigating further into using AT&T as our internet provider. Has anyone cones [done?] this at home and cut the cable for good?

Yes, we cut the cable about three months [more]

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Boards Post

LorenCobb replied to the Macro Economic Trends and Risks board. 2:18 AM

Re: OT Statistics and correlations

... a very good demonstration of why correlation does not imply causation... Thought the statstics gurus here might get a kick out of it.

Thanks, I guess.

These figures -- and many like them in countless previous publications [more]

Fri Oct 10

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Boards Post

LorenCobb replied to the Math Recreations & Puzzles board. 12:31 PM

Re: New Show on Game Show Network

I apologize! Apparently the thing known in physics as a "Penrose diagram" is quite different from the diagrammatic system of notation for tensors that is known in mathematics as "Penrose graphical notation". Same Roger Penrose, [more]

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LorenCobb replied to the Math Recreations & Puzzles board. 12:15 PM

Re: New Show on Game Show Network

... puzzles that may appear difficult at first, but when understood properly, they are quite easy.

In my experience, this characterizes most (if not all) of mathematics.

This semester I am teaching a course in how to write [more]

Wed Oct 8

NL

Boards Post

LorenCobb posted to the Pandemic Disease board. 6:34 PM

The key to ebola in the USA

The ebola news this morning brought word that Patrick Duncan, the first-ever person in the USA to come down with ebola, has died in Dallas. Then, just a few minutes ago, came word that a second person has been taken to hospital with ebola-like [more]

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