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twoslide

465 karma · joined December 9, 2015

http://2sli.de
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twoslide··on Amazon to pay full college tuition for its front-line employees
I don't think it matters how the payment is made. Trump's former CFO is now facing charges for having his grandkid's tuition fees paid, but not declared as compensation. It's a bit different, but comparable.
twoslide··on A generation of American men give up on college
Is the issue higher education (colleges/universities) or higher education finance? Sounds like the latter.
twoslide··on Alternative Milks
I think you're engaging in some wishful thinking with grass-fed carbon-negative cows. The climate impact is from methane they produce from digestion, regardless of the food source.
twoslide··on Alternative Milks
Would be great to see a link on this. When I search, most results suggest the impact of grass-fed cattle is no different, e.g:

https://www.sciencemag.org/news/2017/10/grass-fed-cows-won-t...

twoslide··on Alternative Milks
Doesn't do much to help with climate change though, which is a much more serious issue. Sounds more like a rationalization for continuing to drink dairy milk.
twoslide··on Alternative Milks
Very useful resource, but I wonder if emissions (kg) takes into account methane emissions from cows, which tend to have a stronger warming effect than CO2. There are conversions from methane to equivalent CO2, so hopefully that's there already.
twoslide··on Stanford researchers make rechargeable batteries that store 6x more charge
That's a good point, although I am not sure whether the "six times" claim was based on the first cycle or the subsequent cycles (partly because the authors didn't make it themselves). Even if subsequent cycles are 1/3 as the first, that could still mean twice as much charge as li-ion.
twoslide··on Stanford researchers make rechargeable batteries that store 6x more charge
They also mention a rapid drop-off in capacity after the first cycle in the article itself (3600 mAh to 1200 mAh). The main point the authors are making is that the discharge process is rechargeable rather than a single discharge. The press release uses this finding to make rather ambitious claims.
twoslide··on Stanford researchers make rechargeable batteries that store 6x more charge
Really interesting to compare with the publication itself:

https://www.nature.com/articles/s41586-021-03757-z

They don't mention six times more charge anywhere. Rather, the novelty is that it they make a discharge reaction re-chargeable for the first time. The final paragraph hints at a rapid drop-off after the first discharge:

> The battery delivered about 3,309 mAh first discharge capacity and was cyclable at 500–1,200 mAh.

One can see a benefit in that a previous single-use battery could be cycled (e.g. a hearing aid). The press release claim is such a stretch as to be essentially a lie:

> a high-performance rechargeable battery that could enable cellphones to be charged only once a week instead of daily and electric vehicles that can travel six times farther

twoslide··on Stanford researchers make rechargeable batteries that store 6x more charge
The press release is naturally all positive spin, but hints at:

[X] it suffers from too few recharge cycles.

They mention 200 cycles, whereas 1000+ is common for li-ion.

twoslide··on Prettymaps: Small Python library to draw customized maps from OpenStreetMap data
Beautiful, different from what I've seen with other OSM data. Dying to be made into a web app
twoslide··on A DIY E-bike Conversion on the Cheap
This is a good point. I bought a used bike for about $100 online and have now done about 5K KM using a cheap conversion kit online, with minimal maintenance. However, I was lucky and also bought a low power kit (250W, while 1000W kits are available). It is a great way to get around but some caution is required. In the wost cases, front wheel drive motors can bend/break the front fork on a ride - not a good situation.
twoslide··on Show HN: PaperDelivery – fetch articles from your Twitter feed
Interesting, did you follow Twitter's recent acquisition of Scroll? They might be moving into this space themselves.
twoslide··on School Shutdowns Will Cost Students a Staggering Amount in Lifetime Earnings
I'm always a bit skeptical that these studied may use current differences in earnings by education to estimate losses in earnings in a context where everyone has had a similar experience of decreased time in school. A lot of the earnings benefits of education are positional, for example being in the top 10% carries benefits and opportunities, regardless of the overall level of education of the top 10%. Looking at current/past differences in earnings by years of school or abilities would probably not be an accurate estimate of losses that will occur to everyone with a similar difference in their education.
twoslide··on Launch HN: HomeBreeze (YC W21) – Easy booking of home repairs
This is a good idea and I wish you well. I would encourage you to think of gender in your marketing. Unfortunately there is a lot of sexism in home repairs, and I think many women would benefit from your service. I (a male) have several times had to get quotes for my mother (single), because she either can't get a good price or contractors will tell her she wants something else, or fail to see problems that need fixing. This could provide a bit more of a level playing field for women in this situation.
twoslide··on The Framework Laptop is now shipping
If enough people buy, then the supply of parts could be independent of the company itself, as third-party manufacturers would probably see an opportunity.
twoslide··on Delivery Drivers Are Using Grey Market Apps to Make Their Jobs Suck Less
Smarter than the Amazon drivers who physically hang their phones in trees:

https://www.bloomberg.com/news/articles/2020-09-01/amazon-dr...

twoslide··on City roads – This website renders every single road within a city
Really beautiful output! I think I saw a similar site that had monetized the idea by selling prints and/or engravings.
twoslide··on An utterly crushing day for Big Oil
It they stopped overnight it would be a disaster, but if they gradually reduced output over time then alternatives would come online. They would seem expensive, but demand would also adjust and life would change to adapt quite comfortably, I think. There would be some bumps, I'm sure, but I prefer that road to the scorched earth path.
twoslide··on Show HN: Mmm.page – Drag and drop personal website creator
Probably - stupid "managed" updates from my organization. Probably should just uninstall the managed version and install the normal version from the web.
twoslide··on Show HN: Mmm.page – Drag and drop personal website creator
I found it unusable on Firefox 81 (including with No addons). Clicks don't work at all - seems to work fine on Chromium. I suggest testing on a broader range of browsers.

Edit: It's just my version, not an issue with the site.

twoslide··on Scroll Is Joining Twitter
Not much discussion on this. Presumably Twitter sells a subscription service that includes access to news sites through Scroll. They'll have to significantly increase the news services offered though.
twoslide··on New evidence that British workplaces are losing viewpoint diversity
I'm not sure there is such a thing as an "apolitical space" - it is kind of like trying to remain stationary on a moving train. Even if you don't discss contentious issues, political parties, etc, you are still part of social and economic systems premised on political views.

For example, one might say they don't talk about climate change/sexism/racism in the work place and therefore it is apolitical, but to another viewpoint not talking about these issues is political.

twoslide··on Modern CI is too complex and misdirected
Am I too old fashioned in thinking it’s good to define an acronym the first time it’s used? I think many well educated readers wouldn’t know CI
twoslide··on Modern action films fetishize the body even as they desexualize it
> hookup whenever I damn well please

Hopefully it's implied, but it should be whenever all involved "damn well please."

twoslide··on ‘Deep Nostalgia’ can turn old photos of your relatives into moving videos
The sign-up that requires Mother's maiden name is a bit creepy
twoslide··on Sony announces Playstation 5 VR headset
"Single cord" is not a great selling point when Oculus is wireless and very competitive on price. Oculus has lost a lot of good will from its community by requiring Facebook login, but many will probably stay with the best hardware, and they stand to gain new users to offset those who do leave.
twoslide··on Interest surges in top colleges, while struggling ones scrape for applicants
This probably just reflects greater uncertainty in the application process due to lack of standardized test scores. In other years, have a better sense of where they stand and can strategize appropriately (i.e. a few aspirational applications and a few safety schools). This year things are much less clear. It may not be a long term trend, or may not accelerate a long term trend.
twoslide··on Margaret Mitchell fired from Google
Selective enforcement could be another issue. If this is common practice at the organization, then using it as justification for termination is a false pretense. Possibly still legal but not really ethical.
twoslide··on Uber drivers are workers not self employed, Supreme Court rules
An owner of a local restaurant told me he pays about 30% revenue to share to Deliveroo, as part of his agreement with them. He also runs his own delivery service, and encourages customers to use that (phoning in) rather than Deliveroo.
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