Saturday, November 7, 2020

Fwd: Needle felting Cat // Making video //By Wakuneco.

This is unbelievable that people can do this.   Although I am impressed by the artistic skill, I think that it looks kind of creepy.

Best wishes,

John Coffey


Saturday, October 31, 2020

How Large is the Universe? Bigger than you can Imagine?

The universe that we can see is so large that it might as well be infinite. Our little solar system is like a speck of dust by comparison. That part of the universe that we can't see may actually be infinite, but we might never know.

Wednesday, October 21, 2020

Adults Can't Seem To Answer These Math Problems Without A Calculator. Can You? | Finance Republic

I saw this quiz on Facebook.  There is always stuff like this on Facebook.

There must have been at least 50 problems here. They are all multiple choice. The goal is to do them without a calculator. Most are on the 4th to 5th-grade level. I got them all correct. They had one problem where they actually got the answer wrong, but since none of their choices matched the correct answer, I guessed correctly the incorrect answer. The problem was "What is 411 - 401.1?". The correct answer is 9.9, but they listed the answer as 10.1. They even said that the problem is tricky without a calculator. Must be.

The toughest problem was a single 2 digit by 2 digit multiply. I can do these in my head, but it takes effort.

My one difficulty is that I'm always looking for shortcuts to solve problems in my head when sometimes it is best to just stick to basic arithmetic.

This seems more like an exercise in attentiveness than math because it would be easy to slip up and get one of the answers wrong.

Friday, October 16, 2020

Hiking accidents

I used to hear about accidents like this all the time while living in Utah.  Many people went hiking in the mountains and accidents happen.

There was a young couple at my work, Trent and Alexis Pabst, who went hiking to the top of a mountain when a storm moved in.  They were killed by lightning.  I noticed the very dark storm clouds from a distance as I was driving home from work, and the next morning one of the secretaries at work was in tears. 

Best wishes,

John Coffey

On Fri, Oct 16, 2020 at 10:33 AM Albert Nelms <wrote:
2020 irony: Some people will not live long enough to die from Covid-19. Wear your mask anyway.

Monday, October 5, 2020

Remembering César Pelli’s lost mark on the Midwest

I was 11 or 12 when they built the Commons mall. I loved it. They tore most of it down and turned it into offices. There is still a restaurant and a small "Commons" area with a children's playground.

Thursday, September 17, 2020

Wednesday, September 2, 2020


People began to settle Egypt about 10,000 B.C. These people learned to grind grains while mostly abandoning their hunter-gatherer lifestyle. This is technically the beginning of the Neolithic ("New Stone Age") period, where humans first learned how to use grains. Coming out of the previous period of glaciation, 15,000 years ago, the climate in the Fertile Crescent, which included the Nile River, became ideal for farming,

There is a small amount of evidence of cattle usage going back to 8,000 BC, but this didn't really get going until about 4,500 BC. During this period there were locally ruled cities along the entire length of the Nile. Eventually, there would be northern and southern kingdoms, which were untied by force in 3,100 BC, and this began the dynastic period of the Pharaohs.

Egypt was conquered by the Persians in 525 BC and conquered again by Alexander the Great in 332 BC. This continued till 30 BC when they were conquered by the Romans. Egypt began shifting to Christianity. During the late Roman period from the 4th to 6th centuries, they would be ruled by the Byzantine Empire, which had split from the Roman Empire. In 640 AD Egypt was conquered by the Muslims. It would be conquered by the Ottoman Empire in 1517 and conquered by the Napolean Bonaparte (the French) in 1798. Egypt was conquered by the British in 1882 and remained under their control until 1954 when the Egyptian Republic was established.

Egypt is one of the oldest examples of farming and human civilization.

Best wishes,

John Coffey

Friday, August 28, 2020

Alexandre Dumas - Wikipedia

The Google Doodle is devoted to Alexandre Dumas, who wrote The Count of Monte Cristo, and The Three Musketeers.

Saturday, August 15, 2020

Days of the week

'There is one major theme that binds together all the days of the week—all of them are named after gods. Furthermore, out of the seven days of the week, six of the days are named after Germanic and Norse gods.

Sunday is named after the Germanic sun goddess Sunna. Monday is named after the Germanic moon god, Máni. Tuesday is named after the Norse god of combat, Týr. Wednesday is named after Germanic god and soul-tender, Woden. Thursday is named after the Norse god of thunder, Thor. Finally, Friday is named after the Norse goddess of foresight and wisdom, Frigg.

This leaves us with Saturday, the only day of the week whose name cannot be traced back to either Germanic or Norse deities. It's the only day of the week that retains its Roman origin in English and is named after the Roman god Saturn. As it stands, Saturday is "Saturn's Day", which is a far more noble name than we would have had if we had retained the old Norse designation—Saturday would instead be laugardagr or, literally, "washing-day".'


Friday, July 17, 2020


I had to explain this one to a ton of people on Facebook.  I got it on the first try.  The guy who posted said that it took him 6 or 7 tries.

What I don't like about these problems is that they change the pictures in the last line, requiring us to infer the values and confusing the solver. It is not just a matter of simple algebra.  

Best wishes,

John Coffey