kgroll | 14 years ago | on: I dare you all, test your strength: Open a book
kgroll's comments
kgroll | 14 years ago | on: The Checklist (2007)
From his Mixergy interview (4/30/10) [1]:
``I have a physical checklist for when I’m doing a deployment. It’s, off the top of my head maybe six commands long; one, two, three, four, five, six. I check them off; dink, dink, dink, dink, dink. And then after I do that, I have the other checklist to verify that it actually took, you know the things that I did that had the expected effect. I missed doing that once because I was exhausted at the day job and, sure enough, that was my biggest down time in four years. So I’m trying to be better at it in the future.''
kgroll | 14 years ago | on: Steve Losh's .vimrc
For me it's a lot quicker to reference comments than the :help entry for each option. Thought it might help others who are creating/modifying their .vimrc.
And of course, thanks Steve for continuing to share your stuff. I'm in love with Vim, and a lot of that's thanks to you.
kgroll | 14 years ago | on: How to seem good at everything: Stop doing stupid shit
kgroll | 15 years ago | on: Ad-supported Kindle to ship May 3rd
kgroll | 15 years ago | on: Introducing Amazon Cloud Drive
kgroll | 15 years ago | on: A hacker's Christmas wishlist
This seems intuitive when considering the difference in impulse between a sidewalk and a grassy lawn, but I'm not sure it actually makes any difference if you have good form - the idea there being that your calves take all the impact (remember impulse, again), versus your knees. Muscles can develop - whereas joints and bones can deteriorate. There's a good illustration of this in the following link from Harvard, which elaborates on the mechanics of foot strike with pretty charts showing the force generated in different scenarios: http://www.barefootrunning.fas.harvard.edu/4BiomechanicsofFo...
I started running in VFFs in September, 2009, but didn't seriously commit to running in them until January of this year. I've since logged 1,200 miles in them and haven't looked back. I've done numerous 20+ mile runs in my Vibrams, including a marathon within the past month. There were 2,700 entrants at that race, but only two runners (including myself) wore VFFs. I haven't had any stress fractures or other injuries since I've started wearing them, even when logging around 60 miles per week. (This is not to say that I disagree with the other comments in this thread.)
I'm pretty passionate about barefoot running. I love to see others joining the movement, so I try to encourage best practices to those making the transition. If any of you have questions about how to take the plunge, feel free to follow up here or contact me via email.
kgroll | 15 years ago | on: Ask HN: What non-financial ways can I/we help Wikileaks?
I agree with you - you can't put Pandora back in the box. I don't, however, think that changes the classification of the leaked documents. When judging an individual's fitness for a security clearance, I imagine that they're looking more at character traits than specific instances of undesirable behavior. Sharing these documents that are already "public knowledge" is only noteworthy because it may indicate that you're not uncomfortable with the idea of releasing classified documents if it's for a cause you believe in. (Just speculating here)
>>Also if State et al. don't hire anyone interested by the cables I think we might be slightly screwed later
I disagree with this. I can think of a handful of reasons somebody lacking interest in these cables would still want to work for the government. Example: To do engineering work for a defense contractor, you'll undoubtedly need a secret+ clearance. You might seek such positions for the job security they provide. Or maybe you're interested in working with cutting edge technology that isn't necessarily available at more budget constrained (IE commercial) companies. Many of the engineers working at a high technical level are drawn to the technology, not the politics.
To reveal any bias, I should note that I do contract work for the US government.
kgroll | 15 years ago | on: Ask HN: What non-financial ways can I/we help Wikileaks?
Those consequences are probably negligible for the overwhelming majority here, but for anybody anticipating getting a US security clearance within the next seven years, you're likely shooting yourself in the foot. You'll either have to reveal the fact that you've disclosed classified material, or else lie under oath. Neither of those being ideal if you're trying to get that job.
It also conflicts with your clearance if you're already holding one.
I'm not saying you should or shouldn't support Wikileaks. Just make sure you give it adequate thought before jumping on a torrent.
kgroll | 15 years ago | on: Official Google Reader app for Android is finally here
Are there any third party readers that include that functionality?
kgroll | 15 years ago | on: Xkcd strip used as a exam question
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This seems to disagree with the gist of the comic, but I think the answer to the final part (largest dating pool) is 23 years old.
I arrived at that by doing the following, please correct me if you spot an error along the way!
The dating range for any age, t, would be defined as:
lower limit = .5t + 7
upper limit = 2t - 14
This agrees with the example in the XKCD strip. The dating range for an 18 year old is from .5(18)+7 = 16 to 2(18)-14 = 22. Because this is linear, the range will always be increasing with age.Despite the range growing with age, we know that the proportion of singles is decreasing with age. Sigh. That's where the other model comes in. The author of this problem gives:
S(t) = e^(-0.05*t)
That looks like this: www.wolframalpha.com/input/?i=Plot[E^(-0.05+x),+{x,+85,18}]I believe the largest dating pool would correspond with the greatest area yielded by taking the definite integral of this function from .5t+7 (the lower age limit) to 2t+14 (the upper age limit). To see this in pretty print, you can visit this link: www.wolframalpha.com/input/?i=integrate+(E^(-.05x))+dx+from+(.5x%2B7)+to+(2*x-14)
Evaluating that for any age would give the area under the curve corresponding to that age.
The next step, then, would be to find the maximum area for any age. To do this, we should be able to take the derivative of that previous equation, and set it equal to 0 in order to maximize it. Again, correct me if I'm wrong, but for the result of that, I get:
-2000(e^(-0.1t+0.7) - e^(-0.025t+0.35)) = 0
I plotted that to find that the max was located at age t = 23.This graph illustrates the size of the dating pool corresponding to age along the x axis: www.wolframalpha.com/input/?i=Plot[-2000(e^(-0.1x%2B0.7)-e^(-0.025x%2B0.35)),+{x,+0,+100}]
Comments? Did I approach this totally wrong? Did I miss something along the way? Does that seem reasonable?
kgroll | 15 years ago | on: Reasons to blog even if nobody ever reads it
"So your fear is justified: practically nobody will read your blog. Unless it's good. Even then, it'll be a very long time before lots of people have read it. Don't worry, though. If you put in the effort, and you write honestly, people will eventually find their way there.
...
I never advertised my blog, and to this day I have no idea how so many people found out about it, let alone why they read it. I certainly haven't made any effort to try to please people. My blog isn't "about" anything, and although there are various running themes, I haven't tried to stick to any particular subject. And I'm horribly inconsistent in my tone, posting regularity, writing quality, and so on. But I'm really just writing for fun, and even if everyone stops reading my blog, I'll still be happy with what I'm writing."
kgroll | 15 years ago | on: How To Mass Export All Of Your Facebook Friends’ Private Email Addresses
It took two tries, however. The first time, it imported 0 contacts. I tried it again less than five minutes later, using the same account, process, and browser. Worked fine.
kgroll | 15 years ago | on: Follow up on the reverse job application.
The positions currently listed on the Jobs page for that company are:
* RoR developers
* Customer Acquisition / Marketing
* Loan processing
I imagine that he'll be trained for the first category.
Hope this isn't too intrusive - kind of reminds me of that analysis of patio11 from a month or two ago. Willing to remove this post if requested.
kgroll | 15 years ago | on: Use Vim Like A Pro
kgroll | 15 years ago | on: Offer HN: Grab lunch with the photos team at Facebook
kgroll | 15 years ago | on: Winamp for Android: Now in Beta
Based on other comments here, it sounds like I need to give Audacious a shot.
kgroll | 15 years ago | on: Facetime for the Mac
Thinking about it, however, reminded me of a passage from Infinite Jest about the failure of video chat.
(1) It turned out there there was something terribly stressful about visual telephone interfaces that hadn’t been stressful at all about voice-only interfaces. Videophone consumers seemed suddenly to realize that they’d been subject to an insidious but wholly marvelous delusion about conventional voice-only telephony.
...
EDIT: Instead of that wall of text, here's a link to the rest of that passage. Sorry about that. http://stevereads.com/weblog/2010/06/07/iphone-4-facetimeinf...
kgroll | 15 years ago | on: Gundo.vim - An undo tree visualization plugin for Vim
Quick question - It looks like this requires python support for vim. What would happen if I didn't have python compiled in, and then tried to use this plugin?
(You can check for yourself with :version)
kgroll | 15 years ago | on: Gundo.vim - An undo tree visualization plugin for Vim
I agree with French author Marcel Proust, who claimed "there is no better way of coming to be aware of what one sees oneself than by trying to recreate in oneself what a master has felt." We can learn what we feel by reading material written by others. We can develop our thoughts through the thoughts of others.
Of course, one shortcoming with this idea, and in my opinion, of literature in general, is that ultimately the author is not ourselves. Despite an authors ability to help us understand our feelings and enhance our sense of perception, there inevitably is a divergence in the particulars of our personal situations and those found in writing. Trying to mold our experiences into those of a book, in hopes of finding answers or guidance, is misguided.
Proust explains better than I can myself:
'It is one of the great and wonderful characteristics of good books (which allows us to see the role, at once essential yet limited, that reading may play in our spiritual lives) that for the author they may be called 'Conclusions' but for the reader 'Incitements'. We feel very strongly that our wisdom begins where that of the author leaves off, and we would like him to provide us with answers when all he is able to provide us with is desires... That is the value of reading, and also its inadequacy. To make into a discipline is to give too large a role to what is only an incitement. Reading is on the threshold of the spiritual life; it can introduce us to it: it does not constitute it.'