Out and about on the lake on this hot, hot day!
Rockstar Parking
To practice my drowning… I mean, swimming… outside of class, I headed to the local Wills Park Pool.
As I pulled into the parking lot, I noticed it was fairly crowded. That gave me mixed feelings. On one hand, I was about to embarrass myself in front of a lot of people. On the other hand, if I accidentally wandered into the deep end, there would be plenty of witnesses… and hopefully a few willing rescuers.
Fortunately, the parking spot closest to the entrance was open.
Unfortunately, it was reserved for “Rockstars of the Week.”
Now, most sensible people would have parked across the road where there we empty spots.
I am apparently not one of them.
I walked into the front desk and made my case.
“I am learning to swim,” I explained. “It can be independently verified that I sink like a rock. Not just this week, but every single week. Doesn’t that qualify me for that parking spot?”
The nice lady at the front desk did not so much reject my argument as gently shooed me away.
Fair enough.
By the time I came back outside, the spot next to the Rockstar space had opened up.
Honestly, that suited me just fine.
I figured I should probably learn to float in the water before floating any other stupid ideas.

Goodhart goes to bed!
This BBC article caught my eye. It resonated strongly with my own experience. I would be curious to hear from others who use sleep monitors – has your experience been similar?
I used to monitor my sleep religiously. Every night, I wore my Apple Watch to bed. Every morning, I would wake up and check not just how long I had slept, but also the quality of that sleep. I did this for years.
Fun fact: if you sleep for a really long time—something like twelve hours—you can actually earn a “blue ring” on the Apple Watch. Ask me how I know…
It got to the point where I would wake up, squint at my watch before I had even put my glasses on, and immediately decide whether I felt energetic or tired based on whatever number it showed me.
Then one day, I began to suspect that Goodhart’s Law might be at work: when a measure becomes a target, it ceases to be a good measure.
So, about a year ago, I decided to run a little experiment.
(I can be incredibly nerdy when the mood strikes.)
I kept a pen and paper on my bedside table. Every morning, before looking at my watch, I forced myself to ask one simple question: Do I actually feel well rested? I wrote down my answer.
After a month, I downloaded all the sleep data and compared it with my notes.
There was absolutely no pattern.
In fact, on several days, the two completely contradicted each other.
I kept the experiment going for another two months, just to make sure.
The one conclusion I came away with was this: my feeling of being well rested (or exhausted) was being governed almost entirely by what the sleep monitor told me—not the other way around.
That was the day I stopped wearing sleep monitors altogether.
I also retired my running watches.
For the last nine months or so, I have been trying to do something much less scientific and much more difficult: listen to my own body.
I’m still learning. But I don’t miss the gadgets at all.
Instead, I now have a wrist bracelet made from bike chain. I tell myself I look way cooler now 🙂

My Chess Rating Took a Hit. My Dad Rating Went Up.
One of the unexpected joys of having Nikita home this summer is that we get to squeeze in a game of chess most evenings.
Earlier this week, I told Sharmila that Niki’s game is steadily improving. Mine, on the other hand, seems to have reached a plateau. I told her it was probably only a matter of days before Nikita beat me for the first time.
Well… Today was the day.
For over an hour, we battled it out. In spite of numerary strength I had on the board, she outfoxed me with some quick left flank moves with a queen-rook combination.
I’m pretty sure this is only the beginning. Soon she’ll be beating me regularly, and before long she’ll probably start offering me “helpful suggestions” after every game. (Children can be wonderfully generous that way.)
Ah well! If we leave this world in smarter and more capable hands than we found it, we must have done something right!

Reached the next milestone on Pegasus
A very hot and humid day on the kayak
Sunday morning puzzle
Which of the following statements – if any – is/are true? How do you logically work it out?
1. Exactly one statement in this list is false.
2. Exactly two statements in this list are false.
3. Exactly three statements in this list are false.
4. Exactly four statements in this list are false.
5 Exactly five statements in this list are false.
6. Exactly six statements in this list are false.
7. Exactly seven statements in this list are false.
8. Exactly eight statements in this list are false.
9. Exactly nine statements in this list are false.
10. Exactly ten statements in this list are false.
Book Review: Algorithms to Live By – by Brian Christian and Tom Griffiths
This book was recommended to me by my friend Sunjay Talele. The title seemed vaguely familiar when he mentioned it, but I had never actually read it. I fixed that oversight this month.
If you have even a passing familiarity with common computer algorithms or statistical and mathematical concepts, you will love this book. It brilliantly demonstrates how many real-life problems have already been solved by algorithms that computer scientists and mathematicians have been studying for decades. The fascinating part is that we often end up applying these algorithms instinctively, without even realizing it. The flip side is equally intriguing: if we actually understood the algorithms, we might make even better life decisions.
Take the “optimal stopping” problem. Imagine you’re evaluating candidates and trying to make the best possible choice. The catch is that once you pass on someone, they’re gone forever. But you also don’t want to stop too early and miss an even better option. This applies to dating, hiring, buying a house—you name it. When should you stop, and what strategy should you follow? (Math and computer science folks will recognize this as the famous 37% Rule.)
Or consider the Explore vs. Exploit problem. Exploration opens up new possibilities. Exploitation lets you capitalize on what you’ve already discovered. The question is: when do you stop exploring and start exploiting?
The authors make an interesting observation here. Humans take an unusually long time to become fully independent. Most birds and animals are ready to fend for themselves remarkably soon after birth. Humans, however, spend years under the protection of parents and their community. That extended childhood gives us a long, safe period to explore before we have to exploit our knowledge — a luxury that arguably contributes to our extraordinary adaptability.
When discussing sorting (and searching), the authors point out an amusing fact about the animal kingdom. “Sorting” is usually accomplished through size or outright fights. Humans, fortunately, have developed other mechanisms. So, much as we complain about the “rat race,” we should probably be glad it’s a race and not a fight that determines our social order!
Similarly, while discussing scheduling algorithms, the authors tackle one of the most universally despised aspects of professional life: meetings. Surprisingly, they make a compelling case that without regularly scheduled meetings, our work lives would actually be worse. Planned meetings are one of our best defenses against constant interruptions and unplanned context switching.
By far my favorite chapter was the one on overfitting. In fact, I was so struck by it that I photographed one of the pages and sent it to several colleagues at work. As we’re all trying to make sense of AI’s impact on our workplace, these lines resonated deeply with me:
“As a species, being constrained by the past makes us less perfectly adjusted to the present we know but helps keep us robust for the future we don’t.”
And this gem:
“A bit of conservatism, a certain bias in favor of history, can buffer us against the boom-and-bust cycle of fads. That doesn’t mean we ought to ignore the latest data either. Jump toward the bandwagon, by all means-but not necessarily on it.”
Speaking of fads, did you know that before kale became a “superfood” sensation around 2013, the single largest purchaser of kale was Pizza Hut? They used it in their salad bars—not as food, but as decoration!
The book also left me with one wonderfully thought-provoking question:
“If all jobs paid exactly the same, what job would you do?”
I wholeheartedly recommend this book. The authors have written it with plenty of humor and an engaging style that almost anyone would enjoy. But if you have even a passing interest in computer science, mathematics, or statistics, I suspect you’ll enjoy it even more.





