Hacker Newsnew | past | comments | ask | show | jobs | submit | kzrdude's commentslogin

Isn't this the same "trap" that any living life "falls into"? It gets many offspring, and only those survive who can feed themselves. Exponential growth fills up the niche until there are no more resources: any successful species is trapped against some kind of resource or environmental ceiling, unfortunately.

Is there a ceiling in the industrial revolution era? Famously the 1972 book Limits to Growth says yes for that question.


Humans should be able to act smarter than bacteria.

It looks more like agrarian society outcompeted hunter gatherer society because the agrarians got more surviving kids. This replacement and assimilation happened in Europe, for example, where it's visible in genetic and linguistic history.

Yes, because it was easier, to not have your kids die among other things.

Hunter-gathering doesn't scale. What is fine when it's one person, collapses the whole society when it gets too large.


A favourite tidbit from that time: Icelandic post released stamps of that eruption and it was used for European postage (mail to Europe).

https://findyourstampsvalue.com/news/stamps-created-from-eyj...

(Stamp is marked "Bref til Evropu" - European postage)


Just to add, there are two main categories of volcanism, shield volcanoes (hot spots, mid ocean ridges) and stratovolcanoes (continental and subduction zone volcanoes). Hawaii is the first kind ("tourist friendly"), Vesuvius at Pompeii is the latter kind (not friendly). The main difference is the silica content, the stratovolcano lava is sticky and viscous; it gets stuck and things get explosive and nasty.

We have a lot of stratovolcanoes around the pacific rim so it's eruptions like those that we should compare with Pompeii, and not really Hawaii.

The two categories also produce, in general, different kinds of rock.


https://youtu.be/T02pJdKARLo

Here is a pyroclastic flow from two weeks ago. In the first minute you can watch it boil a rainforest to tree trunks. That is an insane amount of heat to do that, green stuff is full of water and doesnt like to burn.


Hawaii volcanism is what geologists seem to call "nice and friendly" - low viscosity lava, not prone to explosive eruptions (unlike the stratovolcanoes of the Andes or the Pacific rim in general) - this is because it's caused by hotspot volcanism in Hawaii.

It’s not nice and friendly because of the hotspot volcanism.

It’s because the hotspot has a chemical composition that is generally low in dissolved gasses and very liquid/flows well. (Lots of silicates I think?)

It tends to come out nicely and stay liquid as it leaves, so vents don’t plug up. Also, because of the relatively low dissolved gasses, pressure doesn’t spike as high when it’s flowing out of the chamber like many other magmas do, causing explosions.

Hawaii exists basically because it’s great for building up islands/mountains without blowing them up as part of the process.


Low viscosity is due to the LOW silica content. Tectonic setting is the primary factor determining the magma's final composition (basaltic) and therefore its physical properties (low silica, low viscosity). The gentle nature of Hawaiian volcanism is a direct result of its basaltic magma, which it has because the hotspot is located under thin, basaltic oceanic crust

I don't think hotspots can be said to have different composition. But if the hotspot is under a continent or an ocean plate makes a difference for the type of eruptions. Hawaii is in the middle of an ocean plate, no continental crust there. So we get a basaltic eruption (comparatively lower silica content, low viscosity lava).

Yellowstone is also caused by hotspot volcanism. The friendly eruption is a property of location, not hotspot origin.

Your initial post read the other way, which the parent post is addressing.


My most durable memory is all the reboots due to programs crashing. Didn't help that a null pointer deref required a system reboot - or that teenage me was behind the keyboard on that front.

Uv uses pugrub and maybe APT could too.

I think a simpler text would be better and less tedious for anyone in the document's audience, something along the lines of "box 'Tagged PDF' to box 'Accessibility'"


I learned all of cvs, svn and then later git when getting into Linux and Open Source. Based on my early experience of multiple systems, I'm very surprised that git has dominated and lasted this long already!


Mistakes and worse is going to be part of any system. Systematic partisanship is something else.


Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: