tim My twelve year old daughter is working a science fair project on electricity and home usage. As part of her project, we have been taking lots of measurements of the electricity usage throughout our house. This provided a great opportunity to talk about smoothing and for me to publicly work through my resultant confusion. Smoothing … Read more
The problem Password reuse is one of the most common security vulnerabilities for individuals and organizations. Common approaches to mitigate password reuse include using a password wallet, writing passwords or hints down, or a simple scheme to translate contextualized information (i.e. a site’s name) into a unique password. Most often, users employ a small set … Read more
Tonight, I was rewiring switches to a more modern set of switches. These days I don’t have time to learn by experience, I have to think my way through this. Without experience, I have to go back to first principles. Funny enough, understanding a four way switch is very similar to understanding digital logic and … Read more
This morning before church, I wrote some code to build a contour plot of schools in New Jersey. The “hot” reddish regions have the best schools and the cooler regions don’t. Tech Stuff: How it’s made This wasn’t that easy. Since I had all the code from my previous post, it should have been very … Read more
I don’t want to read about it, just take me to your super cool interactive map. We are moving to the greater New York City area this summer where Tim joins the leadership team of Colgate-Palmolive. As tempting as it is to spend all our time on Trulia, Estately or Zillow looking at specific houses, … Read more
A common complaint among engineers is that modern computers obscure the details of the complicated math they produce. We cringe when children are exalted as “knowing computers” from a young age. Bill Gosper and Richard Greenblatt had perhaps the maximum benefit to “learn computers”. They didn’t have wolfram alpha or even spreadsheets, they had to … Read more
Happy New Year! Bring in the new year with some code to transform USAA bank statements into a set of transactions for 2016. It is a little tricky because there are some 2015 transactions in the list and USAA puts transactions on two lines. To use, just save the bank statement pdf as text and … Read more
Following a polarizing election that has left many in my community surprised and confused, Robert Putnam’s “Our Kids” provides a refreshing collection of research and engaging anecdotes told with generosity of spirit. Perhaps more than any other modern voice, Putnam excels at describing American society in a bi-partisan way. He and his previous best-seller, “Bowling … Read more
Lower altitude = higher endurance? At first glance this didn’t make sense to me. Air Force pilots will be the first to tell you that you don’t hug the earth en route to maximize your time on station, it is harder slogging in thicker air. At higher altitudes you have lower air pressure and colder … Read more
Yuval Harari (יובל נח הררי) has written a scholarly, thought-provoking and crisply written survey of “big history” that he uses to preach his starkly different views of philosophy and economics. Dr. Harari teaches at the Hebrew University of Jerusalem where he wrote Sapiens in Hebrew and accomplished the very idiomatic translation himself. Provocative and broad, … Read more