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roberthahn

653 karma · joined September 22, 2011

http://ca.linkedin.com/in/rwhahn/
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roberthahn··on Advice from YC founders and partners
Do you have any plans to make this content accessible for the deaf and hard of hearing?
roberthahn··on The universe has already made almost all the stars it will ever make
So, about that. One of the weird things about General Relativity is that if we COULD travel at or near the speed of light, then time dilation and length contraction will conspire to enable a trio to the end of the observable universe in 30 years.

So we could definitely explore the universe, we just have no way to share what we discover with our friends back home.

roberthahn··on If software engineering is in demand, why is it so hard to get a job?
I _really_ like this variant! In my experience new grads never seemed to have too much trouble with the exercise but then I do explain that it’s diagnostic in nature and use the exercise to see how coachable they are.
roberthahn··on If software engineering is in demand, why is it so hard to get a job?
I have had good luck hiring developers by asking them to do a code review of something WE wrote (but framed as if a junior developer wrote it)

This helps us look for good signal around their communication skills, mentoring skills, empathy, reasoning skills and software development skills.

We used this review as a diagnostic - there are no wrong answers since we know they’re not aware of our style guide and conventions.

It worked for us. Maybe it could work for others.

roberthahn··on I made an eInk newspaper
I would love to have one of these eInk displays in my woodworking shop for displaying project plans while I work! I hope this product becomes commoditized soon!
roberthahn··on Ask HN: How do I learn drawing?
Saying “ This is the worst way to learn how to draw.” feels, to me at least, like a microinvalidation. If that’s not your intent then I’m happy to move past it.

That exercise I outlined was the first project that gave me the confidence I needed to pursue a fine art education up to an undergraduate level. I didn’t get to that point without learning anything more, but I honestly don’t feel I made a critical error here.

And with respect to the OP, it kind of does look like he aims to only be hobbyist levels of good.

I commend your passion for the subject. I just can’t support the idea that there is a right and wrong way to learn how to draw.

¯\_(ツ)_/¯

roberthahn··on Ask HN: How do I learn drawing?
Suit yourself. The method I described worked for me. I was terrible at drawing before, and I was awesome at it after. If it helps the OP great, if not, maybe your way would work.

I’m a bit surprised at the perceived hostility here. When it comes to making things, since when was there only one way to do anything?

roberthahn··on Ask HN: How do I learn drawing?
To learn to draw, you first need to learn to see. So copy things.

Try this project:

Take a sheet of paper and divide the space into 2 equal halves. In one half make a collage of black and white images. No color - this is important. Try to fill the space if you can.

Once done, get a pencil, eraser and ruler. Your job is to copy the collage into the other half as accurately as possible.

To do this, measure where every point is on the collage - any place where 2 edges come to a point, then plot that point in your working space. With or without the ruler, copy the edges. Then focus on how dark or light the part of the collage you’re copying is and replicate that.

After awhile you will find you’ll want throw away the ruler and do it by eye. Try it. You will find yourself drawing much better.

Some tips: you have to use pencil and paper. A screen is going to throw you off. You can always try it on a second or third attempt of this project.

This one project literally took my art mark from a failing grade to 85%, and everyone after swore I had a gift. It’s not a gift. It’s just a skill that develops with hours of practice.

roberthahn··on If Aliens Exist, Here’s How We’ll Find Them
Hey now you can’t tease a premise for a novel like that without telling us the title and author :)
roberthahn··on The Dream Job That Wasn’t
I saw a video recently where Adam Savage was talking about his experience working at ILM. His friends observed at the time he always spoke in terms of what he “gets to do”. Not has to do, _gets_ to do.

That looks like a pretty great metric for measuring how close to ideal your job is.

roberthahn··on Ask HN: I want to start learning Lisp. Where do I begin?
I’m glad you had a better experience than I.

I tried learning CL back in 2006 and read a quickstart guide from the #lisp IRC channel. It had sentences in it like:

“ Using a plain text editor without any runtime connection to your Lisp implementation just because you think you prefer its keybindings is stupid and self-defeating.”

And

“Follow these directions or risk our wrath, or at least unsympathetic attitudes!”

The document, mercifully, doesn’t appear to exist any more. Maybe when I called them on it at the time they realized that maybe there’s a better way and changed it. But it definitely made a poor first impression.

roberthahn··on Ask HN: I want to start learning Lisp. Where do I begin?
I remember wanting to learn lisp. I got stuck and reached out to the community for help.

And found them to be very hostile.

I decided I had better things to do with my time.

roberthahn··on Ask HN: Self-taught webdev with lots of free time. What should I learn?
You have all the skills needed to succeed in a technical level. Maybe look into expanding your expertise in sales, marketing, or running a business.

If that doesn’t float your boat then I suggest getting into woodworking with hand tools.

My point is that you don’t need to spend all your time focused on tech skill development - you might burn out on it.

roberthahn··on Ask HN: What is your favorite internet rabbit hole?
Back in the mid 90's there were 2 rabbit holes I loved to visit. One of them was the Monty Python website :-)

The other one I haven't been able to track down. I'm hoping someone here can tell me what happened to it. It was an art site called "The Place" hosted by a university in Canada. It was a mixed media site with art, poetry and short stories. Does that ring a bell for anyone? I loved that site and wanted to visit it again many times. But "The Place" is a difficult term to search with these days.

roberthahn··on Tabby's star is dimming at an incredible rate
The dimming is probably a dark matter nebula passing between it and us.
roberthahn··on Ask HN: Do employers care how long it took you to finish a degree?
I have a B. A. In Fine Arts (studio specialization). I have spent all of my career as web, then software developer of some kind.

While I sometimes envy you (and others) for having CS degrees, I have never had a difficult time landing work as a developer. Imposter syndrome is still pretty high though.

As many others have suggested, just list the graduation date. That's all prospective employers care about. The fact that you have a CS degree matters more than how long you took to earn it.

But even that pales in comparison to your ability to clearly communicate what you're competent at. So focus on your communication skills and self esteem. And you'll do just fine!

roberthahn··on Mark Zuckerberg's multi-account password was 'dadada'
As soon as I saw the password I wondered if Mark was left-handed.

Turns out I was spot on: a bit of googling revealed he was.

roberthahn··on Lens of human eye can be fully regenerated, at least in newborns
That's interesting. My problem is that I suffer from a connective tissue disorder. And, as it happens, it was the connective tissue between the lens and eye that gave out.
roberthahn··on Lens of human eye can be fully regenerated, at least in newborns
I'm not an optometrist but I imagine your lenses are working against you so you need to compensate extra. Also: your eyeball shape is working against you.

Not all focusing happens in the lens. The eyeball fluid does malt of the work actually.

roberthahn··on Lens of human eye can be fully regenerated, at least in newborns
I never got Coke bottle lenses. Those are for people who have no peripheral vision. The Coke bottle design is supposed to bring the peripheral into the area the patient can perceive.

What drive me nuts about my glasses is that it effective took my peripheral vision away, making me seem way more clumsy and uncoordinated than I would otherwise have been.

roberthahn··on Lens of human eye can be fully regenerated, at least in newborns
Yes!

But when I had my eyes fixed the tech left too much scarring for me to benefit from that procedure. I do ask about it periodically just in case the situation changes.

roberthahn··on Lens of human eye can be fully regenerated, at least in newborns
Yeah, I have a pair of those for when I'm not wearing contacts and the chromatic aberration drives me nuts.
roberthahn··on Lens of human eye can be fully regenerated, at least in newborns
It's equally blurry at all distances. Small or distant things are much harder to resolve.
roberthahn··on Lens of human eye can be fully regenerated, at least in newborns
I had to have my lenses removed from both eyes when I was a child (in the 70s). The problem in my case was that they were dislocated.

Since the surgery, I wore very thick glasses to correct it. I switched to contacts in the early 80s (contact lens tech was barely viable by then) augmented with reading glasses.

Today I wear contacts to get to 20/20 or 20/30, and reading glasses for computer work or reading. My correction is around +8.25 or so for each eye.

This is very exciting news and I hope kids don't have to go through the pain of wearing super thick glasses growing up.

roberthahn··on How to C in 2016
Thank you very much for the link and suggestion! Much appreciated!
roberthahn··on How to C in 2016
Very nice! Thanks for your help!
roberthahn··on How to C in 2016
In light of the fact that best practices have evolved considerably since K&R, what book(s) would you recommend for people wanting to learn C today?
roberthahn··on 1,000 True Fans (2008)
This is an excellent model for building any lifestyle business, not just for artists.

If you knew how much money your favorite customers made, and asked for just one day of their income to support you, it becomes trivially easy to work out a definition of sustainability for your business.

For SAAS businesses, the number of "true fans" that are therefore required could be ridiculously low. 100? Maybe 10!

roberthahn··on Show HN: Make a programmable mirror
Beats me - I just wanted to see if a library like this even existed.
roberthahn··on Show HN: Make a programmable mirror
If you want to build an interactive programmable mirror, looks like Nanogest might be useful: http://www.nanocritical.com/nanogest/ It's available for both iOS and Android.

It recognizes 4 swipe gestures (top, down, left, right) and a wave gesture.

It's a library so you'd still have to build the information display part.

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