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pbk1

175 karma · joined February 8, 2017

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pbk1··on 1-on-1 meeting questions
How would your response change if the shortage of "good" developers stops? Or when they decide 2 "bad" but cheap developers cost less than 1 "good" one?
pbk1··on Tech salaries are risk premiums
It's almost impossible to directly quantify in dollar terms the productivity of individual programmers. I am suspicious of the claim that all programmers who command a high salary are "highly productive" and "reduce the amount of work that others must do." Unlike professional sports or finance, where extreme outperformers are generally compensated in proportion to their contributions, the output of engineers is generally less quantifiable at tech companies so median engineers are paid more than their personal labor can justify. Tech salaries are also a function of how much VC money has flooded the sector since the crisis - expect this effect to dissipate as (i) investors focus on profitability before growth at all costs in the wake of WeWork etc. and (ii) if/when valuations in private capital markets undergo a correction (for which they are long overdue!)
pbk1··on Ask HN: What Are Some Good African, Asian, South American News Websites?
For Asian regional news in English I'd recommend Southern China Morning Post. It's based out of Hong Kong and still independent from the CCP's grasp (for now).
pbk1··on Ask HN: What are your favorite email newsletters?
I'm a huge fan of "Money Stuff" by Matt Levine for all things finance.

http://link.mail.bloombergbusiness.com/join/4wm/moneystuff-s...

pbk1··on College Students Just Want Normal Libraries
Strangely enough I have a bunch of co-workers who swear they can't get things done without music, noises, or chitchat in the background. One in particular is a reformed trader who uses tracks of noisy trading floors as a focus tool.

I on the other hand need noise-canceling headphones and a confined private workspace to feel really productive. To each their own I suppose!

pbk1··on Interest Rates: Naturally Negative?
Piggy backing off of this followup, bond prices move inversely with yields. Ceteris paribus, a -0.5% yielding bond commands a higher price than a -0.1% yielding bond. Bonds are quoted in yields but traded on a dollar price (typically as a percentage of par) hence the capital gain I implied above being realized with the higher price should yields/rates fall further.
pbk1··on Interest Rates: Naturally Negative?
If I expected interest rates to go even more negative, buying a negative yielding bond in anticipation of a capital gain is a rational trade.

Also banks and certain investors are mandated to purchase debt with certain ratings - in the absence of positive-yielding appropriately rated bonds they have no choice but to accept the negative yield.

pbk1··on Ask HN: Passive Income Suggestions?
what happens when you need to pay for $TragicLifeEvent and are forced to liquidate your ETF position in a downturn?
pbk1··on Google reveals fistful of flaws in Apple's iMessage app
This post and the parent comment they responded to are both about Google?
pbk1··on Ask HN: What are some fun projects to try out on a spare Linux file server?
Also worth checking out is reddit.com/r/selfhosted, which tends to be much less 'masturbatory' than /r/homelab
pbk1··on Launch HN: Carry (YC S19) – We Book Travel for You on Slack
Text/SMS would also be great here. I had a very positive experience booking onsite interview related travel via Pana, which seems to have a similar offering.
pbk1··on Chase did a bad thing, so we did a good thing
Very nice! I was actually in the process of building the exact same thing but charging users for the cost of mail and server/API expenses.
pbk1··on Terry Gilliam’s Don Quixote film finally hits the big screen after 25 years
Weird - this German language source [0] from around the time of his citizenship renunciation indicated the 29 day cap last for ten years - so it would've stopped 3 years ago..

[0] https://www.tagesspiegel.de/kultur/kopflos-am-potsdamer-plat...

pbk1··on Terry Gilliam’s Don Quixote film finally hits the big screen after 25 years
Interesting - the last sentence of the logline reads "Or will love conquer all?" [0]

Does anyone know if this is a snipe at Sid Sheinberg, who famously edited the happy ending of Brazil which was titled "Love Conquers All"? [1]

[0] https://www.imdb.com/title/tt1318517/ [1] https://en.wikipedia.org/wiki/Brazil_(1985_film)#Home_media

pbk1··on Ask HN: What are some financial newsletters you subscribe to?
Used to work in finance, now work in fintech. I read Matt Levine's Money Stuff newsletter every single day.
pbk1··on The Knot Book: Introduction to the Mathematical Theory of Knots (1994) [pdf]
Only one way to find out!
pbk1··on The Knot Book: Introduction to the Mathematical Theory of Knots (1994) [pdf]
Wow - I took introductory topology with Colin just a few years ago. He wove in a few examples from OP's book and I had several friends who took his knot course - excellent resource for anyone interested and he is an amazing person/mathematician.

Readers here might appreciate one of my favorite homework "problems" from his topology course- it's a simple but counter-intuitive mathematical result that's easy to replicate even for young children. Rip a sheet of paper (8.5x11 will do) in two long strips. Take the strips and tape them so that one is a ring and the other is a Moebius strip.

Here's where the magic happens: make a guess about what happens when you cut each object long-ways, then cut both objects with a pair of scissors. Won't give any spoilers but the result may surprise you :)

EDIT: also forgot to mention the knot book and his topology book are great at highlighting open/outstanding problems that precocious undergrads could tackle. I definitely wish more authors of math texts went out of their way to point out avenues for exploration like this.

pbk1··on Robinhood launches 3% checking account
Just out of curiosity how do you employ margin in your personal investment portfolio?
pbk1··on Tech Start-Up Fires Engineers Amid Union Organizing Effort
I think OP is referring to a potential settlement. The engineers' case alleges the startup violated the National Labor Relations Act.
pbk1··on What's The End Goal for Wealthfront and Betterment? (2016)
why don't Silicon Valley firms partner with existing smaller banks looking to do more with their balance sheets? seems like if their ideas are truly disruptive it would be a win-win for both parties.
pbk1··on Japan's Universities Are Failing
that would seem to make it comparable to a number of "elite" American universities ;)
pbk1··on Goldman Sachs automated trading replaces 600 traders with 200 engineers
Klarman said Trump's protectionist stance against automation and globalization will lead to market inefficiencies.

He also said the increase in passive investment relying on the efficient markets hypothesis (EMH) will eventually lead to mispricings and inefficiencies that can be taken advantage of by active investors such as himself.

Those two things have nothing to do with the automation of execution trading and market-making. So he is not claiming that automating the execution trading and market-making done by banks in highly liquid markets (equities in OP) will lead to more inefficiency.

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