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jsackmann

288 karma · joined March 31, 2007

http://www.jeffsackmann.com http://www.tennisabstract.com

@tennisabstract

jeffsackmann @ gmail

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jsackmann··on Opt Out of Cynicism
This article outlines some of what you remember (though not, afaict, anything about getting Nazis interested in his medical 'experiments') https://www.tabletmag.com/sections/arts-letters/articles/vik...

Per the article, he spent years in concentration camps, but only a few days at Auschwitz.

jsackmann··on What makes an interview podcast good or great?
I have no idea whether this applies to Lex, or if there are better explanations, but... he probably just asks. In my limited experience with my little podcast in the sports analytics world, I'm consistently surprised by who says yes, and how few people say no. ~90% of the people I've asked to be a guest have said yes, and those who have said no haven't done so because they're "too famous" or something like that.
jsackmann··on Chess tactics explained
Not OP, but they're referring to situations when players call their own lines. (Virtually all amateur matches.) If you are horrible (or blatantly biased) at calling lines, your opponent can call the tournament referee, and you may end up with a line judge. But that takes time, and only happens after you aggravate your opponent. If you wait until a key moment to make a bad call in your favor, your opponent won't be able to reverse it, even if they call the referee and get a third party to call the lines for the rest of the match.

This is a particularly big issue in competitive junior tennis, unfortunately.

jsackmann··on St. Matthew Island is said to be the most remote place in Alaska
Those Antarctic islands are the Balleny Islands. I took a cruise a couple of years ago from NZ to Antarctica, and we were able to land on Borradaile island [1], one of the Ballenys. I can't find my notes for the exact figure, but the historian on board said that, including us, only a few hundred people had ever set foot there. Many expeditions pass within sight of them, but landing is treacherous--IIRC, we went onshore for about an hour in the morning, and by lunch it no longer would've been possible to do so.

[1] https://en.wikipedia.org/wiki/Borradaile_Island

jsackmann··on Why Nadal is unbeatable on clay
Shot-by-shot stats for almost 6,000 pro matches, including over 300 of Nadal's and 400 of Federer's: http://www.tennisabstract.com/charting/meta.html

Raw data for a large subset of those matches: https://github.com/JeffSackmann/tennis_MatchChartingProject

jsackmann··on Nat Hentoff has died
The headline currently says "Nate Hentoff" but it's Nat, not Nate.
jsackmann··on Music theory for nerds
Broadly speaking, major chords sound bright and happy. Minor chords sound dark and sad.

The C major scale consists of C-D-E-F-G-A-B-C. The A-minor scale consists of A-B-C-D-E-F-G-A. Those are the same notes, but if you play each of those patterns on a keyboard, the first one sounds happy, the second one sounds sad.

A C-major chord (technically, triad) is made up of C-E-G, the first, third, and fifth notes of the scale. Again, sounds happy. The A-minor triad is A-C-E ... sad.

But if you play a melody -- that is, one note at at a time -- it isn't always clear whether it's happy or sad. In most western music, though (including virtually all pre-1900 classical music and the vast majority of modern pop), the piece will end ("resolve") with a clearer "happy" or "sad" type of chord. That final chord is what determines the key.

(In a huge amount of classical and popular music, the final chord is the same as the opening chord, but not always. When they're different, the final chord tells you the key.)

jsackmann··on Citizen uses OpenCV to track speeders near his home
Where I grew up (eastern WA): "Eight is great; nine, you're mine."
jsackmann··on Mike the Headless Chicken
>the chicken earned US$4,500 per month ($47,700 today)[5] and was valued at $10,000

Not a very generous multiplier, but then again, the actuarial tables for a headless chicken wouldn't be all that favorable.

jsackmann··on Uber Is Testing a Massive Merchant Delivery Program
Yep. I drove a cab for about a year (2003ish, college town of ~200,000 people), and the company I drove for did this. It wasn't a big business, but there were a few substantial accounts, notably the local university hospital system, which sent around a lot of specimens in very serious-looking containers. Pre-ubiquitous GPS, shared taxi dispatching and routing involved a lot of yelling and guessing.
jsackmann··on Ask HN: Those who quit their jobs to travel the world, how did it go?
I traveled for about two years. I was able to work remotely, so I didn't have to worry too much about a tight budget or finding employment upon return.

It was a great experience, and here's what I'd change:

- spend more time in fewer places; be less of a tourist. (bonus: for the most part, the less you move around, the less expensive it is.) I would particularly try to do this in places that aren't typical tourist destinations. Think of stops of 1-3 months (perhaps with side trips) rather than 1-2 weeks.

- if you're traveling with someone else (particularly a significant other): (a) be really, really confident that you want to travel together for that long; (b) do whatever you can to find destinations that you both are interested in; (c) explicitly acknowledge that you will want to spend time apart during your travels; and (d) expect the relationship to get rocky at times even if you do all of the above perfectly. It's hard.

- Plan to return to your current home, if at all possible. I didn't do this, and re-adjusting to 'normal' life was much more difficult without an existing set of family and friends around. Even if you do go back 'home', re-entry won't be seamless. One of my friends spent two years in Japan and claims that she was more homesick upon returning home (USA) than she ever was in Japan.

jsackmann··on How Bots Seized Control of My Pricing Strategy
In my experience: Amazon automatically discounts some books, a certain time after their release. I've published several through their subsidiary CreateSpace, and the two that sold more than negligible amounts were discount the same ~28%. One eventually went back to my 'retail' and the other stayed discounted.

Again in my experience, Amazon's discounts do not effect the author's take. At least in CreateSpace, the author's royalty is based on the retail price the author sets.

jsackmann··on AOL Exposed: A Former AOL Employee Speaks Out
The economics are true of just about anything that scales -- startups and anything in the arts both come to mind. There's no guaranteed route to six-figure comfort (like there is with, say, dental school), but the potential rewards are enormous.

And, as other responses have pointed out, in all of these fields, people really, really want to do them. The number of writing jobs that are 'comfortable' (pick your number, $60k?) has sharply declined from the glory days of the newspaper industry, but it still has the same non-monetary attractions, and there are the still the same opportunities to become, say, a bestselling nonfiction author.

jsackmann··on U.S. Postal Service Nears Collapse
It's not talking about success rate of items that are mailed; it is talking about the number of pieces that are mailed in the first place. The latter number is declining.
jsackmann··on The 4-Hour Dentist
In a sense, that's what an active blogger does before going blog-to-book. True, the author is the one putting the sentences together, but the market has a lot of say in the direction future articles go, and what of the blog content goes into the book version.
jsackmann··on Optimal Employment
I've gotten my last couple places on craigslist and been happy. Look for apts that are truly 'by-owner.' Plenty of them do exist.

Astoria is relatively cheap (as noted above) and safe; other nearby neighborhoods in Queens can be even cheaper, if not quite as safe (Sunnyside, Long Island City), and if you are commuting to midtown (or in my case, not commuting at all) you're looking at <30m.

IMO, Brooklyn apts tend not to have the same value, taking safety and commute time into consideration, but plenty of people would argue with me on that point.

jsackmann··on The Anatomy of a Perfect Landing Page
Does anyone here have first-hand experience testing w/ the VeriSign seal? The parent link gives an example of a very substantial sales increase thanks to the seal. For $299/year, though, it's a bit beyond the range of "eh, what the hell, I'll give it a try."
jsackmann··on Tim Ferris: 3 More Case Studies of Successful Cash-Flow Businesses
It would seem that there's almost always more to the story, and his overall message ("you, too, can have financial freedom all by yourself...now go have fun") might be stronger if he acknowledged that, yes, it's hard to build a company to that point.

What I think is valuable is the constant reminder that the business/income-building is a means to an end, and there's a wide world of choices out there for what the "end" is.

jsackmann··on Ask HN: What are you reading right now?
Yep, I love that one too.

In case you (or others) don't know, the movie Gettysburg is based on The Killer Angels, with the same focus on Lee and Chamberlain. It's very long, but good -- much was filmed on site, and Pickett's Charge is done in real-time. Harrowing stuff.

Also, let me plug the battlefield itself -- I just visited a couple of weekends ago for the first time as an adult. If you've read about it or seen the movie, it's a fantastic place to see. Unlike some Civil War battlefields, standing there really makes it clear -- you can look down from the top of Little Round Top, and you can look across the field of Pickett's Charge from both directions.

jsackmann··on A year of Geek Atlas sales (some facts about book royalties)
Don't be so quick to discard CreateSpace.

I recently published my first book through them [1], and imho, it looks good. I formatted the book itself in LaTeX and had a graphic designer do the cover, which cost me a couple hundred bucks. It doesn't look exactly like a typical textbook, but that's much more because of some first-time mistakes of mine than anything about the production process.

Also, not sure what "a lot of upfront fees" are in this case. I paid for my cover, but that's not required. They offer a plan for $39 (iirc) that gives you a better royalty deal. But that's it.

[1] http://www.amazon.com/gp/product/1453772316/8631&pf_rd_i...

jsackmann··on The Perfect Salary for Happiness: $75,000
Your first point is raised in some form nearly every time this comes up. But what is forgotten is the value of living in these more expensive places. $75k in NYC/SF may buy you less, but you get more free things of value, in the form of quality peers, access to eduction/investment, etc.

It's only an anecdote, but: My income would be the same regardless of where I live, and I'm pretty sure my choice to live in NYC provides me more happiness than most other possible choices.

jsackmann··on For God's sake, follow your dreams
This is a good point that aligns with a lot of my experience. It's amazing how differently people define the word "do."
jsackmann··on FlightCaster (YC S09): United trounces Southwest in 2009 on-time %
If I'm looking at on-time stats to see if they should have a bearing on which airline I fly, I care a whole lot about the definition of "on-time." I don't care about being 15-30 minutes late, but I do care about not being 2 hours late.

Again, this sort of thing should be adjusted for routes and airports, but depending on your purpose in flying a route (going home, where your parents will pick you up? flying to LAX to catch an intercontinental flight with a tight connection?), a more granular breakdown is important.

jsackmann··on The best running shoe may be nature's own
I also haven't taken the Vibram plunge, but I can give you a huge thumbs up for the Free line. I've been doing almost all my running (40+ miles per week) in Free 5.0s since I switched over last fall, and they are reasonably comfortable and attractive as everyday walking shoes as well.
jsackmann··on Why I Stopped Throwing Out Junk Mail
Maybe this is obvious, but in case it's not: For those interested in really studying direct mail tactics, there are lots of books on the subject by experienced practitioners. I read several of them a few years ago; wish I could highlight one or two as a recommendation, but I don't remember.

As noted in some of the other comments, these folks test everything, right down to the color of the envelope and the size of the signature at the bottom of the letter. It's also fascinating to read war stories. IIRC, there's a direct mail letter for Reader's Digest (or some similar publication) that was most effective for decades. They kept testing it against other contenders, but that same letter kept getting results.

jsackmann··on Ask HN: Please name two of your most favorite books.
Moby-Dick

The Life and Opinions of Tristram Shandy, Gentleman

jsackmann··on Should you Walk or Bus?
They travel at 30mph often, but not over very long distances. Imagine your stereotypical cab driver, with excessive acceleration and lane changes, and insert a stop every two blocks to add/drop passengers.

Actual average speed depends a lot on the number of passengers. At rush hours, if you're walking at a fast pace you can outrace a bus. Only so much the driver can do when 20-30 people get on the bus at a stop.

jsackmann··on Fuck the Fortune 500, It’s All About the Fortune 5,000,000
Is it necessary to mention that some client relationships fall into neither category?
jsackmann··on Fuck the Fortune 500, It’s All About the Fortune 5,000,000
One of my companies works with sports franchises--not Fortune 500, but pretty substantial operations. This really hit home for me:

"You’ll be a bitch – whether you end up getting paid a lot or a little from a big company, you’ll be their bitch. They’ll expect a lot from you, and in most cases you’ll end up doing more work than what was listed out in your contract."

Now, if you stand up for yourself from the get-go, you can avoid that last part most of the time. But certainly, you can be treated differently than larger operations. They get the benefit of dealing with decision-makers (me) instead of some lackey, and they will often take advantage of that.

(But...not only YMMV, but MyMMV. I've got clients who try to make me their bitch, and I've got clients who worship the ground I walk on.)

jsackmann··on The Two-Hour Rule
The union wanted to move up go-home time, and compromised on lunch time alotted. So instead of working 8-12 then 1-5 with a 1-hour lunch, the schedule changed to 8-12 then 12:42-4:42.

That doesn't explain why :42 instead of :40 or :45. Hence the mention of 10ths of hours. That makes the choices :36, :42, :48, etc., and I guess ya gotta pick one.

(That's my best guess, anyway.)

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