pmg

Joined 17 years ago

Karma
8,073
Submissions
768
Member since
Mar 26

    (Previously) Founder of Lockitron (YC S09). Created the smart lock. 

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    http://twitter.com/pmg

    Works on secure hardware for key storage.

    Palo Alto, CA
    Shenzhen, CN

    [email protected]
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Recent submissions

Comment · 10 days ago
Comment · 14 days ago
As an American tourist, I have gone to Gdansk for work (at the University) and then trained over to Gdynia for a kitesurfing vacation.

But as a Californian, the two cities feel as different as Arcata and Eureka.

Comment · 1 month ago
Trying to run this but keep hitting bugs. Can you open up issues reporting on your repo?
Comment · 1 month ago
Nice, how did you find this? Does it make for a speedrun sequence break or does one still need other items before exploiting this?
Comment · 1 month ago
Comment · 2 months ago
Part of getting deals done in China (in the old days) involved drinking.

After enough trial and error, I found I had luck with pre-gaming bioavailable pre-pre-precursors and water about 6 hours before drinking. More so than just water. Or just precursors.

The surprising bit I learned in some papers (in mice) was that glutathione precursors like NAC can actually do more liver damage if taken after drinking than just taking nothing. Timing seems to matter a lot.

That and there’s a bit of a difference between effective hangover prevention and after the fact hangover cure. The latter is kind of like asking how to uncrash a car. IV drips are very effective for symptom relief but the damage is already done.

Comment · 2 months ago
> that’s seamless

I wish it were. The double click to pay is pretty annoying compared to “express mode” Apple Watch apps like Suica and UniFi Touch Pass.

Comment · 2 months ago
Comment · 3 months ago
I just restored an 1800’s house and we redid the paint in limewash as part of that process. (Effectively zero VOCs but pretty caustic when wet.)

Historically (for interior paint) you would use regular limewash in dry spaces and add casein/milk in high traffic/wet spaces. It works in a bathroom but wouldn’t hold up in a shower (for that you would want to use “tadelakt“ - especially if you’re going for that Aman spa look).

The contemporary solution with modern limewashing is to use “mineral shield” - it uses silicone instead of casein - it makes water droplets bead up but still lets water vapor breath through.

It also doesn’t flatten out the nice velvet texture one gets with limewash paint from the calcite crystals.

That said, it’s extremely obvious if one touches up a patch of wall with limewash. No two batches are the same color unless you’re going pure white and even then…

Comment · 3 months ago
Seeing the index in action next to an oura I appreciate how much smaller/thinner the index is (or at least how much less it seems to “spread” my fingers apart with of a width of 6.5mm vs 8mm).

It’s effectively a regular ring with a button on it that’s smaller than a typical 1ct engagement ring. The oura by contrast (even the 4) is a chonker compared to “regular” wedding bands. I’ve tried in the past but personally a very thick ring is a non-starter for me. Might just be a personal sensitivity thing. Clearly the oura sells.

From a V1/MVP/founder lens I am sensitive to the value in shipping a product that just works rather than doubling the complexity with a bms, custom charger, wrap around flex pcb, and associated engineering effort to mitigate ignition hazards. Especially when there’s platform risk in seeing if this thing even gets used. There’s no platform risk on the watch side which has comes miles from my first pebble/Alerta that was one day charge and blackberry phone compatible only.

As for the ewaste argument? If the market demands a rechargeable product then that’s the right move. But from a weight perspective? This feels performative. Even pessimistically three-four 5g device that are 0% recyclable will generate less ewaste than a 200g phone with 55% recovery and a 5% recapture rate of obsolete devices thats turn over every 3.5 years. It’s like 10x less and probably in the ballpark of what a hypothetical “rechargeable” index would look like.

Comment · 3 months ago
Comment · 5 months ago
Recurring revenue, K-factor, long shelf life and low actuation rate.

Few verticals outside of video storage could support a monthly subscription putting negative pressure on supporting a shipped product.

Most smart home products are anti-social and had a low k-factor. You don’t want to share access to your scale to more than a handful (2?) people. This makes market adoption slower than a social networking app.

Touched on in the video but median shelf life for these $200 products is 8 years. Thats very “bad” relative to most other consumer hardware. Especially say a $1500 smartphone that’s replaced every 2 years.

Actuation rates on many categories are abysmal. Your smart smoke detector may go years without sending you a message. Compare to say screentime for ChatGPT on mobile averaging hours per day.

Interestingly a lot of those floundering smart home products became thriving businesses when pivoting to smart office focus. Subscriptions go up, user counts go up, utility goes up.

Comment · 5 months ago
Some lesser god of protein folding is big mad we just copied her homework instead of spending 6 billion years in the lab like she did.

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