tylerjaywood

Neat! I'd love to be able to play against a model. Do you know how they fare against human slime soccer players?

This is my motto (data engineer frequently dealing with "but this source says...")

Watches are precise machinery that require maintenance and well known watch brands take great pride in the longevity of their pieces, meaning they provide support for the lifetime of the watch (you will pay for this though). Typically, every 5-10 years you send them in for a service. Overtime, the little pieces and minuscule drops of lubricant wear and age and need replaced. Visibility into these metrics can help you keep an eye out for problems.

Higher end watches also get external certifications that reflect different precision standards. Some examples: METAS, COSC, or Rolex Superlative Chronometer if you are Rolex and need to be special. They have different specs, Superlative Chronometer is +/-2 sec per day. If it's out of spec and you're under warranty, you may be entitled to a free adjustment by a service center. Otherwise, overtime, as the performance degrades, it's a signal you may need a service.

There's also the risk of magnetization. If the delicate machinery becomes magnetized, you'll see BIG swings, like +/- minutes per day. Demagnitization is something any watchmaker can do quickly. (There is inherently some risk posed by the phone itself having a lot of magnets, but modern watches are typically built to resist magnetization to varying degrees -- look at the Rolex Milgauss as an example of best-effort magnet resistance)

Watches will also perform variably depending on position. If you know your watch is -4sec/day on your wrist, but +6sec/day face down, you can effectively manage it's accuracy by placing it face down over night and never have to unscrew the crown but keep a true time. This is a very common use case.

Hope that covers the general cases. This app avoids a lot of even deeper complexity, like beat error and amplitude which are deeper metrics describing the movements performance and guide watchmakers to know which screws to adjust which way.

I used flutter so maybe some day!

It's in open beta testing on the Play Store for Android. You can also find low cost external mics for your devices that work well.

This is the way. I got one as well to validate my results. Cost is the difference. If you're okay with close-enough and saving $145, I think the apps fit in a nice place.

I will say, this flow is not the primary concept for the app. My intended design, and what it's been for 2+ years, is a tool that provides structured flows for inputting the time on your device and comparing it to atomic time (provided in my app). If you stagger these measurements over 6 or so hours for a day or two, you get a very precise reading and I still recommend this approach as being better.

This is designed to be used by the internal device microphone. And this is in my write up, but if you have Airpods in all the time (like me), it will try to use that microphone and it will not work, and it will cause you to lose a day in frustration if you are working on something similar

I have this in open beta on Android right now so you're welcome to give it a shot and let me know :)

One difference is cost. I know that mine is lower cost, and is a one time unlock -- no subscription. So there's that. I'm also therefore positioned a little bit more towards the casual user, I prioritize speed of completion which means I need high confidence in a good signal quickly and don't hesitate to cancel mid-flow.

I think one thing alternatives offer is the ability to run for longer -- like a 10 minute check for instance. There are marginal gains in precision for every additional second, but they seem to diminish pretty quickly past 30 secs or so. But that's one difference I'm aware of.

This is definitely the way. Even the old wired mics Apple phones used to ship with that had the little rectangle mic works better because you can press it right up against the case back.

I'll do some research on this! I have a nagging feeling that there is more I can do to get the most out of this, but struggle with knowing where to look since this is not my background. I'm learning a lot as I go!

I built an audio timegrapher feature for my watch accuracy app, ChronoLog. Professional timegraphers use a piezo contact sensor and can cost upwards of $1,000. I wanted to do it with a phone mic.

The problem: an iPhone's built-in microphone picks up a mechanical watch's tick at about 1.5 dB SNR. The solution turned out to be epoch folding — the same technique radio astronomers use to find pulsars. Stack 100+ tick periods together and you get +20 dB of effective gain, enough to reliably measure rate and beat error.

The post covers the full DSP pipeline — bandpass filtering, epoch folding, autocorrelation (and why it finds harmonics before fundamentals at low SNR), Kalman filtering for convergence — and what I learned from five rounds of device testing.

vite

You could also try

Chrono - arrange historical events in chronological order (https://chrono.quest)

That's in there. The list is random each day, but I'm pretty sure that showed up a couple days ago!

I built https://chrono.quest as a fun way to discover weird or anachronistic events from history. If anyone knows of a good list of events like this, please let me know so I can add them!

you can pry my Andrew Ng Coursera ML cert from my cold dead hands

You can't compare RE vs equities as 1:1 substitutes for wealth building -- RE offers you 5-10x leverage on your capital, something hard to come by and a riskier proposition (generally) in equities.

What are those things it's attached to, and what purpose do they serve relative to the shuttle itself?

I'm about break even on a learning project for me: https://chrono.quest -- until you factor in my dev/user support time lol

It's a bite-sized daily history game, much inspired by Wordle.

Why do it?

Every once in a while someone emails about how they play it with their friends or family every day and it helps them keep in touch.

Also, as a data engineer, I wanted to understand more of what goes into deploying a consumer web app. Turns out I much prefer crunching data :)

pointless whining about nothing that matters

FB has repeatedly stated that they don't want to be the arbiter of what speech is and is not allowed on their service. It's a huge burden in their eyes to have to make and enforce policy, especially in a competitive landscape where other companies may reach different conclusions.

FB would love for the US gov to step in and lay out clear guidelines about user generated content that would be applied universally to them and all their competitors.

Yes

You should consider if the CPI is the best indicator or just the most popular

https://www.investopedia.com/articles/07/consumerpriceindex....

In normal inflation that’s exactly what happens. The problem is that inflation, if unchecked, can increase to a point that there are meaningful month over month, or week over week, or in some historical cases, minute over minute changes in value of the currency. How quickly can wages realistically keep up?

The biggest winners during high inflation periods are those holding the largest debts.

(Jerome Powell)

To a point, stocks and other liquid dollar-denominated assets.

After that point, who knows. Precious metals? Depends on how bad things get.

The biggest winners in hyper-inflation are those holding the biggest debts

There are numerous. Google search “hedonic adjustment CPI”

I press f on the worlds smallest keyboard to pay respect to the billionaires betting they could grind the company out of existence through aggressive shorting who lost money on this.

> Reddit crashing the markets

Source on that? Even at this prices GME is ~$20b market cap in an exchange that represents ~$25t in market cap. I don't know that it really poses a systemic risk to anyone who didn't take out insanely risky short positions on the company in the first place

> This feels chilling to me, maybe I’m alone.

You are not

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