There's a bunch of other interesting flight path optimization work going on at https://contrails.org/.
It turns out contrails contribute to 2% of global warming power and is relatively easily avoided. The cost might be a bit more fuel consumption though.
Which is why work on fixing contrails is so important, it’d be insane to leave 50% improvement at a tiny cost unresolved whilst clawing back small percentage efficiency gains in co2 release from incremental and hideously expensive engine improvements.
We need to do both of course, but contrails should’ve been resolved the moment they were identified as so significant, it’s frustrating how slowly the industry responds to such an enormous opportunity (“we halved our climate impact last year” would be easy marketing)
As long as win there doesn't get used as an excuse to procrastinate on reducing co2. If you asked me I would favor a ban on all non-emergency flying which solves both problems.
I don't see the claim you describe. That page discusses that daytime contrails have warming and cooling effects, but doesn't appear to take any stance regarding which effect is larger during the daytime.
Other sources claim that daytime contrails have a net cooling effect:
The daytime cooling effect is much smaller than the nighttime warming effect, a total elimination of contrails would be a big improvement, just not as optimal as possible.
This is incredible. I have a Jetson lying around and will try to it out on this. I use it to play with vision models, not LLMs, and have been wanting a better way to manage the machine.
I loved reading the writing-setup guidance. After a lot of writing myself (mostly throwaway stuff) I've settled on a fountain pen with a small stack of decent printer paper on top a stainless steel clipboard. I skip the clip and use four magnets on corners of the paper to hold it in place. The magnets are either small enough or slide around easily enough to give me the space I need to write but hold enough to keep the paper in place. Importantly, the magnets don't cause any ripples or rising of the paper as the clip does over it's backing. Writing on this setup feels uniformly smooth.
Once I settled on this method, other writing setups felt unsatisfying. Maybe others will enjoy this setup as much as I do :)
I loooove the idea of teaching children inspiration instead of intimidation. Everything in the built world was made by a person just like you and me. That person may have had special training or unique experiences, but we too can move towards training and experiences and build/do cool things.
One of the ways I try to do this with my kid, is to try to investigate what's behind what we see and interact with -- with technical stuff it's asking how it works and how things fit together, with social stuff it's asking what's going behind the scenes and getting involved with it. Then reflecting on how cool the technical thing or event/social machinery is and what function it serves. This has been generative of tons of great questions from my kid and great discussion with them.
I can only share my empirical anecdata - I deal with code in different languages daily. Lisps have little difference when using with LLM just like any other compile&run language. But when you hook them up to a live Lisp REPL (which I admit requires some work) - it all gets very interesting.
Dr Seth Horowitz did some interesting work in psychoacoustics and documented how low amplitude low pitch movement-based sound(s) promotes falling asleep mediated by the vestibular system. Explains why its so easy to fall asleep in the car
Same. I'm very happy with my FW13 too. It replaces the MBA for my purposes -- dev on linux (mostly webdev on this machine, have a remote machine for gpu/heavy work), web browsing, streaming, some very light gaming (portal 2 on steam).
I'm waiting on that test too :) a few more cpu generations and I'll be itching to upgrade. I'm excited to for that to happen.
I wonder how these compare to high frequency training standards. It seems like they'd have similar speed/reliability/predictability requirements in the critical paths.
JFS-CPP bans exceptions because you would lose control over the execution of the problem. The HFT crowds didn't like it because you'd add 10ns to a function call.
At least before we had zero-cost exceptions. These days, I suspect the HFT crowd is back to counting microseconds or milliseconds as trades are being done smarter, not faster.
It turns out contrails contribute to 2% of global warming power and is relatively easily avoided. The cost might be a bit more fuel consumption though.
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