sndrtj

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About sndrtj

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  1. Contuing baby steps. Spent an ungodly amount getting this contraption on the Mun. After many, many attempts I finally figured out that having your probe core angled by 90 degrees makes for extremely awkward maneuvering. Ergo, decided to place multiple probe cores along the body, so I could switch. Ultimately settled on this rocket After botching that specific attempt too due to .. ah... ''landing" too quickly ( ), I decided to only send one Kerbal this time. As I relied on the last stage actually crashing and exploding so the base would land on its belly, I had to come in rather hard. Yay, Jeb's on the Mun! Except...... I broke my solar panels in the landing, meaning Jeb will slowly freeze to death. This requires a rescue attempt. Thankfully, I settled on a much, much simpler design for the rescue: just a large tin can.
  2. I'm retaking baby steps. Landed a tin can on the Mun. Launched a satellite into Minmus orbit, and have a probe waiting for a transfer window to Duna. Planning to start a lunar base.
  3. After not playing for quite some time, I decided to pick KSP up again. I have the Steam version, so it is automatically updated to the newest version. I reinstalled the only two mods I have: MechJeb and RemoteTech. Mechjeb is working as intended, but I somehow cannot get remotetech to work. Remotetech parts are available in the VAB, but I cannot activate any of them. See here for the simplest probe design possible: no connection. Probes are also controllable even without a connection to KSC, even though that shouldn't be possible. The config screen says I do have remote tech enabled. I tried starting KSP in administrator mode, but that was to no avail. I'm on WIndows 10, 64-bit. What am I doing wrong?
  4. I have an Intel CPU and AMD GPU and since Windows 10 came out I too have been experiencing quite some issues with games, including KSP. Windows keeps installing an outdated GPU driver, so you might want to check whether you really have the latest drivers installed. Furthermore, for some reason completely unknown to me the CPU power settings were set to 5% even on performance mode (!), which made the CPU underclock continuously. Upping that to 80% was a world of difference. Perhaps this might be the case for you too? In that case, go to power settings --> select the mode you'd like to change --> advanced --> processor power settings.
  5. You could perhaps make it divide everything by 3.6? ;-)
  6. I noticed something odd going on at physical warp (4x) when rotating a simple spacecraft. Objects attached to the main body start detaching, and seem to rotate slower than the main body. To make matters more odd, is that some objects move at different speeds than others. I made a video: https://youtu.be/O0yc78fNskc To reproduce: create simple space craft, add some radial chutes and air intakes. Launch, and rotate at 4x speed. My graphic's setting: Render quality level: fantastic Texture quality: full res Fallback part shaders: false Aero FX quality: normal PPFX: yes Surface FX: yes 1280x720 Full screen Anti-Aliasing: 2x Vsync: every Vblank Frame limit: 120 fps Pixel light count: 8 Shadow: 4
  7. From Ars Technica So the triangular shape we all saw was in fact Dragon. If they manage to recover cargo even in the case of RUD - because the likelihood of at least one more RUD occurring in the future existence of SpaceX is probably over 100% - that would be great news for customers.
  8. If I understand relatively correctly, it would still be able to, since the speed of C is fixed regardless of reference frame. Never mind the fact that one cannot send a probe at light speed. It will always be slower than C. Only in the case of superluminal speeds, communication becomes impossible. But that argument is mute anyway (since can't reach C).
  9. In a new career, I managed to do the Munar flyby without any maneuver nodes being available yet. Aka, just guessing where to burn! Went right on first try xD. Zipped past Mun, and was shot into a highly eccentric orbit with apogee further than Minmus. With the tiny bit of fuel left, I managed to lower perigee below Kerbin's atmosphere, but the descent would have been way too steep. Luckily, I got another Mun encounter on the way back, which got me a much shallower angle of descent. Aerobraked a few times, and got back to Kerbin in one piece xD.
  10. Erm... I think you are misunderstanding the word "genetic" as to only mean something in DNA-form. In fact, is just means any unit of heritable information. Given the three points I raise, a zillion types of life are possible. Let's take point one: heritable information. This could be in any form. I don't care whether this heritable information is in the form of DNA, entangled quantum matter, hydrogen plasma, source code or whatever. As long as this information is, in principle, transferable from one generation to the next (again, the mechanism of transfer is irrelevant), it adheres. So most definitely, if something evolves (and then it transfers heritable information from one generation to the next by definition), and it somehow maintains some form of homeostasis (again, type and mechanism are not specified), I would consider it alive. Even artificially created things can be entirely alive by these three items. - - - Updated - - - You're right there. I should have named bullet point one as "It contains heritable information, which it is, in principle, capable of passing on to from generation to generation". - - - Updated - - - Interesting. I don't think what you are saying is at all mutually exclusive with my earlier three points. In fact, you seem to mostly describe (which I would call) homeostasis, i.e. the maintenance of catabolic processes - order, structural genesis - which will be utilized for metabolic processes - destruction of order, energy transfer. - - - Updated - - - You're missing the point that there are always going to be things skimming the border. This is inevitable. As for dormancy. Dormant cells or individuals do not cease catabolic and metabolic processes (i.e, homeostasis). They slow it down, sure, but do not cease it. So there is no contradiction here. When we take frozen specimens, you could say that they are currently no longer alive. That said, alive <--> dead does not necessarily have to imply a purely one directional process. Frozen bacteria could be considered as currently-dead bacteria which haven't yet lost the complete capability of being resuscitated (although it will only work in a subset), to give an example.
  11. Actual biologist here. Those seven items we've all been taught in high school could better be named hallmarks in stead of defining properties. Yes, they are common to life, and if an entity has all seven, we would very likely all call it "alive", but it's not all that is to life. Especially at smaller scales, it tends to break down. There are three key items that, to me, define life for a given entity: 1. It contains genetic information, which is passed from generation to generation 2. A body of highly-similar (genetically) entities evolves its genetic information and behaviours over time (this naturally follows from point 1) 3. It actively maintains homeostasis. The end of this homeostasis means the death of said entity. Entities that have merely points 1 and 2 is what I would call not alive but nevertheless biological. Especially that third item is what I have been missing in this thread. And it is oh-so important. I have seen someone mention "boundary between inside and outside" as a defining property. This forms the basis of homeostasis, but it is not the end of it. Homeostasis means that the entity keeps its internal properties (hence it needs outside/inside border) relatively stable by some means, regardless of its surroundings. There are many forms of homeostasis, and higher forms of live have ever more complex ones. The most simple is osmotic pressure. The concentration of salts and organic compounds (nucleic acids, proteins, metabolites, etc) inside a cell tends to be widely different from that outside, and the cell actively maintains this. More complex forms of homeostasis include such things as blood pressure, blood oxygenation levels, heart rate and structural integrity. Life must spend an arduous amount of energy on maintaining this homeostasis. When it ceases to do so, it will die. E.g. a human dies if blood pressure isn't maintained, blood oxygenation levels drop, heart rate drops, salt balance (i.e. kidneys) is disrupted, you name it. An interesting property also arises from this homeostasis: living things seem to have locally lower entropy than their surroundings. The necessarily contain and produce higher-order structures. Ironically, these same higher order structures allow for extremely efficient energy transfer (e.g. photosynthesis is much more efficient at converting light into chemical energy than the simple radiative heating of the sun on bare rocks), which in effect increases the entropy of the total system. So some practical examples: Is fire alive? No. It doesn't convey genetic information from generation to generation (it doesn't have generations at all), and therefore also doesn't evolve. Very temporary homeostasis might exist for fire, but this is self-limiting, so not truly there. Is a rock alive? No. It has none of the three properties. Is a virus alive? In most cases no. It however is quite obviously a biological entity, in the sense that it most definitely carries genetic information and evolves. There are some viruses that skim the border, and seem to have some form of sustained homeostasis. Is a bacterium alive? In the vast majority of cases, yes. However, just as with larger-than-usual viri, there are bacteria which are so small as to entirely depend on host species to survive, so they skim the border between alive and not. Are mitochondria and chloroplasts alive? Interesting question! They do have genetic information, which they pass on from generation to the next, and also evolve. Furthermore, it is generally assumed both evolved from endosymbionts. But, AFAIK they cannot survive outside of the host cell, i.e. the host cell provides for most homeostasis purposes. Are humans alive? Most definitely .
  12. Interesting concept. I would think ion engines are rather complicated for steampunk, but there might be a way to utilize water in a more simple way: the electrolysis of water produces H2 and O2. Combine those and we have BOOM again. That of course does require you to generate reasonably large amounts of electricity (perhaps from solar heated boiler/turbine), but electrolysis itself is simple enough. Water electrolysis was first performed in 1800.
  13. As unethical as it may seem, human lives do have their 'price'. We are not going to invest 5B USD to try to save a single human being, sorry. Public risk management projects do take that into account. E.g., a Dutch life was valued in 2008 at €2.2 million with regards to the Delta Works
  14. That's probably ineffective. In basically any field, roughly 80% of problems are easily fixed by targeting the low-hanging fruit. Those remaining 20% are your bigger problem. You're going to have to spend ever increasing amounts of effort for just a tiny reward. If you were to plot effort spend vs success rate, it's probably going to be a curve that's asymptotically approaching 100%. There is going to be a point at which further QC is more expensive in any terms than just having the occasional failure every now and then.