I've written a bunch about air purifiers over the past few years, and its frustrating how bad commercial market is.
The most glaring problem is the widespread use of HEPA filters. These are very effective filters that, unavoidably, offer significant resistance to air flow. HEPA is a great option for filtering air in single pass, such as with an outdoor air intake or a biosafety cabinet, but it's the wrong set of tradeoffs for cleaning the air that's already in the room. Air passing through a HEPA filter removes 99.97% of particles, but then it's mixed back in with the rest of the room air. If you can instead remove 99% of particles from 2% more air, or 90% from 15% more air, you're delivering more clean air. We should compare in-room purifiers on their Clean Air Delivery Rate (CADR), not whether the filters are HEPA.
Showing some pictures to Claude it guesses there might have been 600 people. Very glad the city gave us permission to close the street! [1]
When I'm on my deathbed, I won't look back at my life and wish I had worked harder. I'll look back and wish I spent more time with the people I loved.
Setting aside that some people don't have the economic breathing room to make this kind of tradeoff, what jumps out at me is the implication that you're not working on something important that you'll endorse in retrospect. I don't think the author is envisioning directly valuable work (reducing risk from international conflict, pandemics, or AI-supported totalitarianism; improving humanity's treatment of animals; fighting global poverty) or the undervalued less direct approach of earning money and donating it to enable others to work on pressing problems.
When I look in man zstd
I see that you can set
-B<num>
to specify the size of the chunks, and it's
documented as "generally 4 * windowSize
". Except the
documentation doesn't say how windowSize
is set.
To encourage myself to live more frugally and to give an example of what I thought was a pretty fulfilling life at relatively low cost for the US, I used to calculate numbers for how much we spent on ourselves. This included housing, food, transportation, medical, etc but not donations, taxes, or savings. At one point there were some news stories comparing our spending to our income, and it was nice to have a simple number to point at.
I was thinking it might be nice to start calculating these numbers again, but when I looked back at why I stopped it's mostly that it's actually a pretty tricky accounting question and I'm not sure there are ways to draw the lines that make much sense. For example:
Work | Nucleic Acid Observatory | |
Work | Speaking | |
Band | Kingfisher | |
Band | Free Raisins | |
Band | Dandelion | |
Code | Whistle Synth | |
Code | Apartment Price Map | |
Board | BIDA Contra | |
Board | Giving What We Can | |
Spouse | Julia | |
Child | Lily | |
Child | Anna | |
Child | Nora |