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jonp

1,383 karma · joined February 20, 2007

jon.palin@gmail.com
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jonp··on Understanding and avoiding visually ambiguous characters in IDs
Actually, 53^8 = 62,259,690,411,361 (not ..360)
jonp··on How to win Monopoly in the shortest possible time
Here's a collection of the shortest finish in many games: https://www2.stetson.edu/~efriedma/mathmagic/1112.html
jonp··on Barnacle gosling’s terrifying cliff tumble
"You can drop a mouse down a thousand-yard mine shaft; and, on arriving at the bottom, it gets a slight shock and walks away, provided that the ground is fairly soft. A rat is killed, a man is broken, a horse splashes" - JBS Haldane "On being the right size"

http://irl.cs.ucla.edu/papers/right-size.html

jonp··on Earnest – A writing tool for first drafts
It looks like there is a way to delete: select a section of text (using Shift and arrow keys) then press Enter.
jonp··on The new YC batch is from 23 countries
"UK" doesn't seem to be shown on the map. I think "UK" should be replaced by "GB" in the URL.
jonp··on Startup lessons
I'd come across a similar suggestion in a political context. Saying "we want a fair tax system" is meaningless, because any political party could say that.

Saying "we want higher taxes on the wealthy to help the poor" or "we want lower taxes on the wealthy to encourage investment" is meaningful and distinctive.

jonp··on The $10K Memory Competition: learn to remember a shuffled deck of cards
The world record stands at 21.19 seconds

(http://www.recordholders.org/en/list/memory.html#cards-speed)

jonp··on Factorization diagrams in Haskell
Here's a JavaScript/HTML5/Canvas version.

You can view the first 100 diagrams in a grid or view the diagram for the N of your choice. There's also an option to view an alternative diagram where the drawing starts with the smallest prime instead of the smallest.

http://jsfiddle.net/FEKX2/3/

jonp··on Fizzbuzz, Interviews, And Overthinking
A tweetable (140 character) single line of Python:

print '\n'.join((lambda x:(''.join(x) if x else str(i)))([w+'zz' for (n,w) in ((3,'Fi'),(5,'Bu'),(7,'Ba')) if i%n==0]) for i in range(1,100))

jonp··on Public Pensions Have Assumed Rates of Return That Should Concern Everyone
Although you also "enjoy" inflation of over 6% pa. In both the US and SA returns are lagging behind inflation by around 1% pa.
jonp··on The origins of the blink HTML element
One (admittedly rare) counterexample is the late Sir Clement Freud:

"We remain together. I call her 'my first wife' to keep her on her toes."

http://www.telegraph.co.uk/culture/5165998/Sir-Clement-Freud...

jonp··on Learn to read a binary font by reading a story
I had a similar thought a while back when reading "A Clockwork Orange". On page one the slang ("droogs", "horrorshow", "moloko", ...) is rather jarring and it's not entirely clear what it all means, but over time the meaning becomes apparent.
jonp··on Your body wasn’t built to last: a lesson from human mortality rates
As someone who does have difficulty conceiving of ways to spend a cosmological-scale lifespan, how might you spend it?
jonp··on Ask HN: What did you create in 2011?
I built http://www.birthdaysudoku.com - sudoku puzzles customised to include a date of birth.
jonp··on Ask HN: What has been your least profitable side/weekend project to date?
http://birthdaysudoku.com - personalised sudoku puzzles.

I've never made any money from it, but I get a kick out of knowing that people in far-away places are using something I've made.

jonp··on Please review my app: personalised sudoku puzzles
Thanks, I appreciate your help.
jonp··on Please review my app: personalised sudoku puzzles
Clickable link: http://birthdaysudoku.com
jonp··on Show HN: My 6 Weeks Project, MultiplayerChess.com
Very nice. It looks great and seems really easy and intuitive to use.

A few suggestions:

1. When playing against the AI (on Chrome/Vista) after a move the piece briefly stays where I put it (not centred on the square; and with two pieces visible if I capture the opponent's piece). It only properly completes the move once the AI has moved.

2. When I promote a pawn it asks me to choose from a set of pieces which are black, even though I'm playing white. Might be nice to use piece icons of the same colour as the player.

3. Are there any open source AI players you could use? I'd be tempted to come back if there were some reasonable ones, but the current AI player is no challenge, even for a real amateur player like me.

jonp··on 23-year-old donates US$1M to support Waterloo student entrepreneurs
I read it as "That's really cool ... and especially cool at such a young age". I'd say the age makes it a rarer and hence more newsworthy event.
jonp··on Music Theory for Beginners
This is great. Can anyone recommend a "DAW (Digital Audio Workstation)" for Windows? Preferably with at least a free trial version. Thanks.
jonp··on Rate my startup - Slowcop - measure your website's speed
I'd find this very helpful too.
jonp··on Ask HN: Wanted: Elementary but surprising group theory result ...
How about the result concerning finding the roots of polynomials; that there are increasingly complex exact and explicit formulae as you go from linear to quartic, but it's impossible to find such formulae for quintics or higher.

I don't know if that fits your needs: it's elementary to state, but not exactly elementary to prove.

jonp··on Ask HN: What's your favorite bookmarked HN thread?
Also interesting to read patio11's comment (via the first link) on "salon scheduling" in light of launching Appointment Reminder.
jonp··on Ask HN: Please review my idea and holding page
Now updated to 12-5-1965.
jonp··on Ask HN: Please review my idea and holding page
Thanks for your comment.

I'm allowing for different date formats (dd-mm-yyyy, mm-dd-yyyy, yyyy-mm-dd) when making the puzzles. But it hadn't occurred to me that seeing a non-American date on the home page could be off-putting to Americans.

I guess I could try to recognize where people are from and show a location-specific example. Or maybe it's best to pick an ambiguous date ie one that works under both conventions. eg 12-5-1965 should do it.

Thanks again.

jonp··on Ask HN: Please review my idea and holding page
Thanks Ed. Yes, I'd started looking at eg Cafe Press for a way to produce physical goods like cards, mugs, mouse mats etc.

I hadn't thought of letters or the 16x16 versions. Also I guess if I do word-search and other puzzles then there's potentially enough to print a custom book(let) of puzzles.

Thanks again for the feedback.

jonp··on Ask HN: Please review my idea and holding page
Clickable link: http://www.birthdaysudoku.com/
jonp··on Analysis of 50+ requests for my "Offer HN" conversion rate optimization help
I think that link should be http://themeforest.net/ ?
jonp··on Ask HN: How to decide what percentage each founder gets?
You could deal with "someone needs to be able to have the last word" without changing the shares of equity. The split of voting rights doesn't have to be the same as the split of financial ownership.
jonp··on Erdős number
If there were similar named numbers for co-founders or co-investors who should be given a number of zero?
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