How big is the world? Published on October 16, 2018October 16, 2018 by fivecolorssandt@icloud.com Measuring a cabbage-patch “It’s a small world” is a cliché. Can we measure how small? Read More
Celestial navigation Published on August 21, 2018August 21, 2018 by fivecolorssandt@icloud.com Knowing where you are You can get turn-by-turn directions. What more do you need? Read More
Making mistakes Published on July 31, 2018July 31, 2018 by fivecolorssandt@icloud.com Is punishing mistakes a mistake? Read More
The navigator’s watch Published on April 10, 2018April 10, 2018 by fivecolorssandt@icloud.com Combining instruments Doing some things the old-fashioned way is getting difficult. Read More
Maps and apps Published on December 5, 2017December 6, 2017 by fivecolorssandt@icloud.com In principle and in practice Another way we may be inadvertently changing how we see the world. Read More
A modern irritation Published on July 25, 2017July 25, 2017 by fivecolorssandt@icloud.com on smartphone zombies New technology often brings irritations as well as conveniences. Read More
Smartphones by campfire light Published on February 7, 2017February 7, 2017 by fivecolorssandt@icloud.com An incongruity of technologies One of our consultants has an interesting device for camping or possibly a disaster situation. On closer examination it appeared to us that it hadn’t been quite thought through. Then we examined it more closely still. Read More
It’s alarming Published on December 6, 2016December 6, 2016 by fivecolorssandt@icloud.com Many things want our attention. They can’t all have it Life always seems to get louder and more insistent. There are reasons for this, though it’s not a good trend. Read More
The radio and the epee tip Published on June 14, 2016June 14, 2016 by fivecolorssandt@icloud.com The strange endurance of obsolescence Why do some things keep on being used when an up-to-date replacement is clearly much better? Read More
When science is an art Published on April 12, 2016April 12, 2016 by fivecolorssandt@icloud.com The experimentalist’s skill Some scientists have an unusual skill for extracting precise data from their instruments. Sometimes this leads others to question their results. Read More