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choonway

339 karma · joined January 3, 2015

https://www.choonway.com
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choonway··on Construction is life
Whether you print a benchy using a tabletop 3d printer using PLA, or a using a gigantic gantry crane pouring cement, the compute power required is the same.

3D printing firmware and all of it's associated design software (CAD/CAM) would run fine on computing technology 10 years old.

Construction speed is bottlenecked by the lack of investment in new techniques, not for the lack of compute power.

choonway··on Construction is life
It's not about the continuous construction. It's about the speed. Construction is way too slow but the world is spending more money on faster compute instead.
choonway··on Experts once predicted that Americans would face excess leisure time (2015)
People like to write about utopia but don't really spend time on the core technology that enables it. Self-replicating machines etc.
choonway··on Elon has decided not to join our board
i wonder how the original text would have fared if it went through the grammarly filter instead.
choonway··on Cadkey or Catia? Boeing’s Billion-Dollar 3D CAD Mistake (2017)
parametric modelling is good for minor changes that don't change the general topology of the part. Otherwise you'll run into topology naming issues that you have to fix by hand (at best) or a complete redesign of the part. (at worst)

there are ways to mitigate the side effects (e.g. using reference planes instead of part topology as feature references) but it's a chore sometimes.

software equivalent of topology changes would be perhaps changing from using a certain set of APIs to another for reasons. If only equivalent functions are used it's not an issue. But if there's missing functions that you have no choice but to recompile the library and add logic to manipulate the information, that's a lot of work!

it's the same as if that hole that you parametrically positioned hits a spar and you have to redesign the surrounding structures.

choonway··on Lithops
this brings a new meaning to 'rock soups'. apparently they are edible and taste like capsicum.
choonway··on mmWave radar, you won't see it coming
the only true binary sensor i can think of are good old fashioned mechanical switches.
choonway··on The Color of Infinite Temperature
how about the color of negative temperatures?
choonway··on Smartbolts
or you could use a drone with a sufficiently zoomed in and stabilized camera.
choonway··on Ask HN: Startup acquired by a large company and it sucks. What to do?
oh i've done this before. the trick is to make changes in your app to suit theirs, not the other way around. it's not impossible, just hard in the meantime get acquainted with their politics
choonway··on Scan of the Month: Lego Minifigures
not exactly, i have been printing FFF parts with a tolerance of 50 microns with a .25mm nozzle. it all has to do with part design and quality filament.
choonway··on What would you pay for autonomous driving? Volkswagen hopes $8.50 per hour
In china, they could probably could lower it down to free. you give up your location privacy and get blasted with ads.
choonway··on A Project of One’s Own
[2]Oh but it already has happening in Singapore. IF the kid can't make it through the conventional academic path, and has to rely on the discretionary route, there are plenty of coaches who will 'teach' your kid how to interview and even 'help' write the essay on his 'interests'.

Of course, the interviewers can easily spot those coached this way, but that is not going to stop the tiger mom from doing what she wants.

choonway··on A century ago Ludwig Wittgenstein changed philosophy
AlphaGo changed Chinese Philosophy way more than most westerners realize.
choonway··on The US Plans to Finally Standardize the Length of a Single Foot
why not combine the both and adopt the metric inch?
choonway··on China passes Hong Kong “patriot” election law
existing treaties with china, us, plus nuclear arsenal etc.
choonway··on China passes Hong Kong “patriot” election law
PRC, ROC and Tibet can claim all the rights it wants, but buddy, you have to back it up militarily and politically.
choonway··on China passes Hong Kong “patriot” election law
ROC took over the assets and liabilities of the qing, just like russia did with the soviet union
choonway··on China passes Hong Kong “patriot” election law
how about texas and mexico?
choonway··on Female Founder Secrets: Men Clamming Up
the quick and dirty solution would be for any male VC to partner up with a female VC to deal with such situations.
choonway··on Are You Trading or Gambling?
trading is gambling. the only difference is the risk and insider info.
choonway··on Analysis: Texas power outage leaves officials working political angles
not sancho panda at it again?
choonway··on Crony Beliefs
the world needs useful idiots.
choonway··on 5nm in the USA: TSMC's Board Approves $3.5B Fab in Arizona
have you considered the scenario that taiwan would peacefully reunite with prc? what would the us do? fight?
choonway··on Huawei patent mentions use of Uighur-spotting tech
Well, the patent also mentions that it can spot Han people. Apparently it cannot discriminate between Caucasians / Indians and Africans. There needs to be work done there. :P
choonway··on Jim Keller moves to AI chip startup
You know, he does have a more than a passing resemblance to Jim Raynor, of Starcraft...
choonway··on South Korea's fusion device KSTAR runs for 20 seconds at 100M degrees Celsius
I also worked at an institute which badgered us to go after 'low hanging fruits' and build a whole bunch of pedestals and ended up with a tv screen and a CGI monkey reciting Shakespeare on a shoestring budget.

I'd would have worked on training the monkey to press buttons the same way they domesticated the fox in siberia, but it would take too long and they didn't want to deal with the hard regulatory stuff.

choonway··on South Korea's fusion device KSTAR runs for 20 seconds at 100M degrees Celsius
you don't need to build solar cells - a reflector will do. and you don't need to launch these reflectors from the earth - launching them from the moon or mercury is much less demanding. you just need to build factories in space.
choonway··on South Korea's fusion device KSTAR runs for 20 seconds at 100M degrees Celsius
It only goes to show that there can be only one winner in space, not that solar concentrators can't be built.
choonway··on South Korea's fusion device KSTAR runs for 20 seconds at 100M degrees Celsius
If you want baby steps - we can start building an autonomous factory on the moon to build more solar cells. No need for nuclear fusion.
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