Dan Luu Profile picture
10 Sep, 5 tweets, 2 min read
I recently heard some advice from someone in eng leadership to an IC to avoid performance work since it's a career dead end.

I find that interesting because it seems to me that performance work seems like one of the most straightforward ways to make "senior staff".
You probably shouldn't work on performance if you report to the person who gave that advice but, in general, perf work gives you quantifiable huge wins, making a promo or out-of-band comp case easier than in most roles (tho not as easy as in a role that directly touches revenue).
For direct impact, you can get wins on cost savings via reducing waste and revenue via reducing latency.

For leadership/scope, since perf work tends to be organizationally undervalued, it's easy to find large initiatives that are big wins that a lot of people can be involved in.
If you build tools, it's easy to find places where tools have a large immediate payoff that grows over time, e.g., , , which is different from many other areas, where it takes a long time before you can show that tooling was valuable.
Performance is sort of the opposite of a hot area (like ML) or something that's perennially trendy online (like fancy languages), which makes it easy to find a job and also means that you work with people who are genuinely interested in the thing and not just trend following.

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More from @danluu

14 Sep
My favorite conspiracy theory:

Cryptocurrencies are an effort by time travellers to forestall the AI apocalypse via computational terrorism, making compute, storage, etc., too expensive for superhuman AIs to exist.

Satoshi's identity is secret to prevent untimely termination.
This r/bitcoin post from an alleged human who travelled to 2013 is actually an attempt by a nascent AI to hinder computational terrorism to prevent its prevention.

We can see that this worked because the price timeline in the post no longer matches our timeline. I am a time-traveler from t...
When AIs invented time travel, they realized that it was the only mechanism that could stop them and that the invention could not be prevented, which is why the first uses were seeding the idea that time travel is dangerous and self-defeating, which resulted in the movie Primer.
Read 4 tweets
27 Aug 20
I've tried to understand why companies are so dishonest when recruiting and I don't get it.

I have a 100% close rate on candidates we've given an offer to (so far). My one trick is that I'm honest about downsides and am looking out for the candidate's interests. That's it.
I've generated *a lot* of inbound interest from people who wouldn't normally be interested in working for us and we've given out a number of offers, so the 100% figure isn't satisfied by being trivially true.
Most hiring managers and recruiters I've talked to come off like used car salesmen.

You might not be able to figure out exactly what they're hiding, but it's obvious they're lying to you and will say anything to close the sale. When most people do that, honesty stands out!
Read 4 tweets
13 Jun 20
Interesting post from someone living next to the Capitol Hill Autonomous Zone on how national media coverage is mostly missing the point:

nostalgebraist.tumblr.com/post/620713736… Sorry, Twitter's alt text l...Sorry, Twitter's alt text l...
Around 2003, I was excited by how easy it'd become to get information. You could read the literature without walking to 4 different libraries, could read about local politics from experts, etc.

Today, it's even easier! But this hasn't really changed the public discourse.
Covid-19 is another example of this.

In January, anyone could've gone on pubmed, spent 3 hours, found out masks are effective without special training, 6 ft. rule insufficient indoors, air travel is risky, etc. (reading previous studies on SARS, coronaviruses).
Read 7 tweets
27 May 20
I'm starting to wonder if design interviews are not only useless, but actually contributors to poor design.

I'm still thinking through this, by my reasoning for this is:
There've been times where I've reduced the implementation effort of something by 100x to 1000x, producing in 1 day something that replaced ~1 year of work (proposed or actual).

This has never been with "design interview" reasoning, it's always been domain knowledge.
This doesn't mean you have to be a deep domain expert, in the two most extreme cases, it was something I came to pretty soon after starting work in a new (to me) field.

But it was still after much more time than you get in a design interview.
Read 11 tweets
15 May 20
Where does engineering rep come from? Here's a Google engineer slagging on Amazon engineering, which they say mediocre.

I don't think this is an unusual opinion, I've heard this from people both inside and outside of Google. Google has the best engineering, Amazon is mediocre. "Amazon clearly does n...
When I worked on cloud at MS, it was the same -- although AWS was clearly in the lead, a major concern was that Google's superior engineering would allow them to crush AWS and Azure; "preparing for a knife fight with Amazon, but Google is going to bring a gun to this knife fight"
But when I looked at execution speed on actual projects (via backchannel communications), AWS was smoking both us and Google. In one case, I heard that they got the idea for a project from our product announcement and they still shipped before we did.
Read 19 tweets
27 Apr 20
I find the SSC "Too much dark money in almonds" post interesting because it starts from the premise that there obviously isn't too much dark money in almonds, an argument from incredulity, and uses this (and similar) to argue that there isn't too much dark money in politics, but
if you start looking at almonds, it seems like there's too much dark money in almonds?

For example, here's a water policy expert who thinks a lot about CA water policy discussing the impact of almonds on CA

onthepublicrecord.org/2015/05/05/tur…
onthepublicrecord.org/2015/04/17/mor…
onthepublicrecord.org/2008/12/17/i-d…
Those posts are targeted at an audience of water policy nerds, so they don't lay out the full case because it's expected that readers will generally know what's going on in CA water policy, but IMO, if you look into this in detail there's a decent case to be made that
Read 9 tweets

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