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Such as? Like it's fine to say this but the worst exterminations of human beings weren't enabled by anything much kre sophisticated then the pointy stick, or a
by XorNot 18d ago
Such as?
Like it's fine to say this but the worst exterminations of human beings weren't enabled by anything much kre sophisticated then the pointy stick, or at most, the railroad.
- RandomLensman 18d agoEarly data processing machines were used in the Holocaust, for example. Or cipher devices played important roles in WWII.
- blfr 18d agoMongols did it on horseback. It's mostly a matter of will/capability and no scruples.
- RandomLensman 18d agoWhy do we need modern weapons for defense at all then? Horses, bows & arrows plus will not enough?
- bayindirh 18d agoBecause attacks have evolved. Defense follows the attackers. Good luck hitting a Mach 15 missile with a trebuchet.
- watwut 18d agoGenocides are more common in the 20th century, because they are easier. Due to technology.
- deleted 18d ago[deleted]
- tstenner 18d agoWe're in the middle of finding it out with climate change.
- bayindirh 18d agoMiddle? We're just starting. The air conditioning technology didn't hit its wall of fire yet. What we're going to do when that tech will cease to cool us? Every AC system (from refrigerators to air conditioners) has an upper limit, which is around 41 degrees Celsius for T1 class.
- RandomLensman 18d agoWhy would 41C be the limit for the hot side? How does it work now in hotter places?
- bayindirh 18d agoIn short: Things degrade. More: https://angliancompressors.com/blog/how-ambient-temperature-affects-air-compressor-performance/ https://angliancompressors.com/blog/how-ambient-temperature-... There's a T3 class for up to 52 degrees Celsius. While it's higher than 41 degrees, it's not significantly higher: https://zerohvacr.com/blogs/t1-t2-t3-explained-climate-classes-for-air-conditioners https://zerohvacr.com/blogs/t1-t2-t3-explained-climate-class...
- RandomLensman 18d agoIs 52C a physical limit?
- bayindirh 18d agoYes. The compressor can't pump more heat outside since it's already hot from working and trying to pump out the extracted heat as well. For T1 class of devices, that 41 degrees is also a physical limit, not an artificial cut, because of their design. You know, thermodynamics.
- RandomLensman 18d agoWhy would the limit of T1 devices matter when there are ones that already can do hotter? Thermodynamics make things harder to remove heat but not sure how they forbid it (you need the hot side to be hotter than outside to pump heat). Might need stages, for example. We can cool things 200K and more below ambient.
- throw0101a 16d ago>> Plus, plenty of negative predictions turned out to be entirely true. And then it took a lot of time and effort to counteract them. > Such as? The ozone layer, Y2K. More recently, climate change (which humanity as a whole is mostly doing nothing about, so we'll see how that ends).