A philosophical essay Published on December 17, 2024December 16, 2024 by fivecolorssandt@icloud.com Many topics A mathematical essay turns out to have much more than mathematics in it. Read More
Turning off the pumps Published on October 29, 2024October 28, 2024 by fivecolorssandt@icloud.com Cooling unplugged There are alternatives to the ubiquitous air conditioner. Read More
Choosing classes (II) Published on January 16, 2024January 14, 2024 by fivecolorssandt@icloud.com Predicting the future If you had to do High School all over again, what classes would you take? Read More
History and the ship Published on July 18, 2023July 16, 2023 by fivecolorssandt@icloud.com Combining many things We present another way to teach history. Read More
Planning for the end Published on May 9, 2023May 8, 2023 by fivecolorssandt@icloud.com Cleaning up after yourself Proper dismantling is harder than building. Read More
A prestigious journal Published on April 11, 2023April 10, 2023 by fivecolorssandt@icloud.com More on science publishing How did it get this way? Read More
Science and economics Published on March 21, 2023March 20, 2023 by fivecolorssandt@icloud.com Publishing and paying Does it make sense? Read More
Rent or own? Published on December 20, 2022December 19, 2022 by fivecolorssandt@icloud.com On revenue streams How and why do we pay for software? Read More
Fresh-ground Published on April 26, 2022April 25, 2022 by fivecolorssandt@icloud.com Far and near Technology and economics, fruit and spices, and a nutmeg-grater. Read More
Economic instability Published on July 27, 2021July 26, 2021 by fivecolorssandt@icloud.com What they don’t tell you We suggest another approach to teaching economics. Read More