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robzyb

1,247 karma · joined August 24, 2013

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robzyb··on USB soldering iron test and teardown [video]
I feel a strong need to throw Mike of mikeselectricstuff[1] into the mix.

His dayjob involves building awesome bespoke electronics, and his vlog has teardowns of heaps of really unique items.

Clive/Dave/Mike make up the entirety of my YouTube electronics subscriptions.

[1] https://www.youtube.com/user/mikeselectricstuff

robzyb··on Babel 6 – useless by default
> I do think the kitchen sink should be included by default, even for experimental stuff. Optimisation and minimisation should be the expert case.

A common theme in the counter-argument is that developers should be aiming to get Babel to some "ideal state" which is neither zero-config or full-config.

I'm not ES/Babel expert, but I think that's a reasonable point.

HOWEVER, I strongly feel that it is easier to get to this "ideal state" if you start with a most-uses-cases config. It's always easier to optimise from something that works, instead of trying to optimise from a broken state in the way that Babel now ships.

robzyb··on Tell HN: AngelList told my employer that I'd updated my profile
It is, of course, perfectly legal to do that with permission.

The problem here is that it was done without permission.

The OP is claiming that the impersonation without permission is a crime, and that it is impossible to waive the crime-ness of it through a contract.

robzyb··on Google nabs Apple as a cloud customer
How much diversifiable overhead does a data center have?

My spidey-sense is telling me that its very little.

robzyb··on Sources of ICQ desktop client by mail.ru
> One thing I miss from ICQ was the ability to have messages stored on the server and delivered next time your friend logged in. None of the popular messaging apps today do that.

Eh? Firstly, people are never offline these days. Secondly, Facebook Messenger (and SMS and Email).

robzyb··on Outlook 2016’s New POP3 Bug Deletes Your Emails
> I still use Visual Source Safe for my personal projects. It's never failed me in 20 years. Right click, check out, right click checkin. Perfect every time.

1st reaction: Horrified that you are still using VSS.

2nd reaction: Was that if it does what you need it to, well, then, who am I to judge? It doesn't matter whether the tool was created yesterday or 20 years ago.

3rd reaction: Does it really do what you need it to do? I would guess that maybe svn/git has some simple featured that would significantly improve your life.

4th reaction: Wasn't VSS known as being super buggy? Is it just luck that you've escaped failure in 20 years?

robzyb··on Writing Cloud Functions
An AWS lambda function powers this Twitter account: https://twitter.com/actdigstream

Considering that the lambda function was pretty easy to write, free to run, and very portable: why would an Appengine app be better?

robzyb··on $250k of DigitalOcean credits for YC startups
Cloud hosting companies are making logical choices.

They care about a company's growth, not its profit.

They'd rather get $1M/annum from an unprofitable VC-backed company than $100k/annum from a profitable bootstrap.

robzyb··on The pirate game
I really love questions like this.

The insight obtained from from comparing the computer-like rationality to what would happen in the real world is truly fascinating to me.

Also, your example of Bob negotiating fits in very well with the theoretical computer-like rationality. Alice's offer of 1c is equivalent to an offer of 0c nominal in the hypothetical case.

The real-life 40% is more a commentary of utility of money as opposed to decision making. I think that you're conflating concepts.

robzyb··on Reported Bitcoin 'founder' Craig Wright's home raided by Australian police
Their income would be less than the $100k. They would have incurred expenses when they provided the services.

I paid $100k, the provider took the $100k and spent $60k. This means they declare $40k income.

The company pays $12k tax.

The Goverment gives $55k to my hypothetical company.

robzyb··on Slack Platform Launch
> does a new business really need Slack?

How many man-hours am I going to spend fracking around Rocket Chat, Mattermost, and Sandstorm?

I think I'd much prefer just paying Slack to worry about that for my hypothetical new business with 10 employees. 6.67 * 10 * 12 = $800/annum.

Peanuts. Especially compared to the value of my time or my employees time.

robzyb··on Whatever happened to Channel 1?
> Receivers are far, far better than they were in the tube era.

Only two "far"s? That's a significant understatement :P

robzyb··on Magic Leap raises $827M in Series C
rsp1984 says that what seperates AR from VR is the need to have latencies <15ms.

zipppy says "what if AR was delayed 15ms to make it equiv. to VR".

Zipppy's intent was to make AR compete with VR, not HVS.

robzyb··on Reported Bitcoin 'founder' Craig Wright's home raided by Australian police
> So... this was a tax raid? Quite a harsh response, considering the rules were drafted 12months ago...

You're making very ambitious assumptions that the tax raid is related to the rules that were drafted 12 months ago.

I'd bet significant sums of money that he isn't in trouble for creating bitcoin. Its more likely to be some other action he has done, possibly with bitcoin.

robzyb··on Reported Bitcoin 'founder' Craig Wright's home raided by Australian police
Fellow Australian here (albeit currently living in Tokyo).

The "We create tax refunds" part of your homepage says that a company can get a tax refund even if there is no sales.

Does this mean that if I establish a company tomorrow, invest $100k of capital, and spent $100k of capital on R&D, then the ATO will give my company $45k?

robzyb··on Why Percentiles Don’t Work the Way We Think
Funnily enough, I am writing an article about this now.

FYI I don't think its right to say "forget means, medians, percentiles, etc." They are hugely useful.

You just have to note that they aren't everything. As you've noted, only the raw data is everything.

robzyb··on Working with Binary Data in Python
It was that easy? Man. Looking forward to giving these a shot...
robzyb··on Working with Binary Data in Python
Why couldn't I figure this out by myself?! Thanks!
robzyb··on Working with Binary Data in Python
This is a good article, but what I've been struggling with recently is dealing with literal binary data in Python.

What I mean by that is I literally have data stored in memory, and I want to deal with it in arbitrary groups of bits.

Sometimes 1 bit, sometimes 7 bits, rarely 13 bits.

My Google's haven't turned up much precedent.

</off topic complaint>

robzyb··on Kickstarter is Debt
Investing in getScale is vastly different to investing in IBM.

Lending to getScale is vastly different to lending to IBM.

Therefore the debt/equity argument and balance is vastly difference.

robzyb··on Kickstarter is Debt
> Just to be clear though debt is actually a preferred type of financing because it is one of the cheapest forms.

Honestly? That statement seems a tad simplistic to me. Especially in the context of startups.

robzyb··on OpenALPR: Automatic License Plate Recognition Library
As an Australian living in Japan all of those plates look remarkably similar. It wouldn't surprise me if all of them were covered under the 'eu' directive.

Of course, my point was simply that there IS an EU rule, and therefore it makes sense to simply have an 'eu' mode that acts upon the rule even if it doesn't cover all EU plates.

robzyb··on Unicorns vs. Donkeys: Handy Guide to Distinguishing
> wouldn't the margin (revenue-costs / revenue) already take into account the cost of acquiring customers?

Not necessarily. The word "margin" is very ambiguous because it could relate to many different types of margins.

In this case I think its safe to assume that "margin" meant the difference between the customer's price and the direct cost of supplying that particular unit of product, ignoring overheads.

robzyb··on Unicorns vs. Donkeys: Handy Guide to Distinguishing
Y'know, I'm not entirely uncomfortable with that conclusion...
robzyb··on Unicorns vs. Donkeys: Handy Guide to Distinguishing
I would argue that's no better.

I would say: When dealing with numbers that span orders of magnitude, and the result is very sensitivity to those numbers, you need to obtain more information in order to make a better estimate.

robzyb··on OpenALPR: Automatic License Plate Recognition Library
"The common EU format of having a blue section on the extreme left with EU circle of stars and the country code was introduced by Council Regulation (EC) No 2411/98 of 3 November 1998[1] and entered into force on the 11 November 1998."

https://en.wikipedia.org/wiki/Vehicle_registration_plates_of...

Maybe not all countries adopt the EU standard, but it makes sense that there is an "eu" mode.

robzyb··on Unicorns vs. Donkeys: Handy Guide to Distinguishing
You beat me to it by 60 seconds, but you made the point in a for more general way:-

The sensitivity of LTV/CAC to the assumed CAC is supremely important here.

robzyb··on Unicorns vs. Donkeys: Handy Guide to Distinguishing
What's badly needed here is a sensitivity analysis.

For example, he lists ZocDoc's CAC as in the range $1k to $10k.

If it's $1k then their LTV/CAC = 4.8 (wow good!)

If it's $10k then their LTV/CAC = 0.48 (wow horrid!)

The author chose $3k, seemingly arbitrarily.

There's nothing wrong with arbitrary assumptions in general, but in this case a lot more scrutiny is needed before we judge if its a unicorn or donkey.

robzyb··on Three Stories
I'm not so sure. A taxi in Melbourne Australia won't even take a booking for a street corner.

"I'm sorry sir, it has to be a fixed address."

Also taxi companies aren't set up to accept payment over a telephone call. So they'd have to trust the recipient to pay.

robzyb··on Raspberry Pi Zero – Conserve power and reduce draw to 30mA
It wasn't intended to be an excuse for not using "correct" terminology or units.

The reason that these terminology and units were used by OP was because at a fixed voltage it is common for engineers to think about current instead of watts... even when their aiming to reduce power.

I'm not sure of the exact reason for this, but I suspect that it's because:

a) Measuring current is a more fundamental function of instruments. Quite a lot don't even measure power. So talking about current instead of power, even when you're aim is to reduce power, makes for a smoother process from a practical sense.

b) Batteries are usually measured in mAh. At lower power/currents you're usually using a linear regulator and therefore dividing mAh by mA is a very important measure. So you often keep everything in mA.

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