What I didn't know about Sheet Rock screws.

I always thought that the reason Sheet Rock screws had so little pull out strength had to do with the type of metal they were made out off. Shows how little I know. Apparently, their weakness has to do with the nature of there thread. From McFeely’s list of Standard Thread Styles…..

Double Lead: Two threads are wrapped around the shank, as illustrated by the blue and red colored threads. One revolution advances the screw 2 pitch lengths advantageous on long screws or in situations requiring rapid assembly. Drywall screws typically use this thread since pull-out strength isn¹t as important as speed. These screws lack the pull-out resistance of “Deep” threaded screws. Typically, #8 and #10 screws 4″ and longer use this thread because of the increased strength afforded by the larger shank diameter.

Needless to say, the whole concept of pitch lengths was knew to me as well. This is also from McFeely’s list of Standard Thread Styles….

Pitch is equal to 1 divided by the number of threads per inch. For a screw with 10 threads per inch, one revolution will advance the screw 1/10″ into the wood.

To his hallucinations, he introduces himself as "Grandpa"

My grandfather has Alzheimer’s. This is really not too unusual; many elderly people have Alzheimer’s. In light of that, it is rather peculiar that so many people seem to have no clue how this disease effects people, or how the symptoms are manifested. It’s a common misperception that people suffering from Alzheimer’s don’t realize how Click Here to continue reading.

Cat expert at predicting death

Just about everyone has probably seen this. I actually meant to post it a while ago. But for those have not, here it is…

Oscar is better at predicting death than the people who work there, said Dr. Joan Teno of Brown University, who treats patients at the nursing home and is an expert on care for the terminally ill.

She was convinced of Oscar’s talent when he made his 13th correct call. While observing one patient, Teno said she noticed the woman wasn’t eating, was breathing with difficulty and that her legs had a bluish tinge, signs that often mean death is near.

Oscar wouldn’t stay inside the room, though, so Teno thought his streak was broken. Instead, it turned out the doctor’s prediction was roughly 10 hours too early. Sure enough, during the patient’s final two hours, nurses told Teno that Oscar joined the woman at her bedside.

Doctors say most of the people who get a visit from the sweet-faced, gray-and-white cat are so ill they probably don’t know he’s there, so patients aren’t aware he’s a harbinger of death. Most families are grateful for the advance warning, although one wanted Oscar out of the room while a family member died. When Oscar is put outside, he paces and meows his displeasure.

No one’s certain if Oscar’s behavior is scientifically significant or points to a cause. Teno wonders if the cat notices telltale scents or reads something into the behavior of the nurses who raised him.

I have to think that if the cat is better at predicting death then the staff then he is not picking up information from the staff. But that is just me.

Also, here is an essay in the New England Journal of Medicine about the cat.

Proto-Protestants

You know of the Protestants, but what about the Proto-Protestants?

A little education in church history for you. “Proto-Protestants is a term used to describe Christian people and movements before the Protestant Reformation who, in opposition to the Roman Catholic Church, expressed views identical or very similar to those held by main Protestant reformers and movements.” […]