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amts

52 karma · joined September 17, 2021

Spacetime is just a data structure
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amts··on Ask HN: Shuold I buy a new ThinkPad E14 with soldered RAM or a used T480?
512Gb SSD is preferrable if the thinkpad most probably comes with Windows, for dual booting with Ubuntu.
amts··on Ask HN: Shuold I buy a new ThinkPad E14 with soldered RAM or a used T480?
I don't know if I should care a lot about soldered RAM, there is 2 y guarantee from local suppliers on both new E14 and used T480. But it seems for a price under 600 euros I won't find +backlit keyboard, IPS FHD display, 4 cores, 16 GB RAM and 512GB/1Tb SSD.
amts··on Ask HN: Shuold I buy a new ThinkPad E14 with soldered RAM or a used T480?
I googled a bit, and [1] shows that: Here are all the current models without soldered RAM: • E14 / E15 Gen 2 (1x SO-DIMM, Intel only) • L14 / L15 Gen 2 (2x SO-DIMM) • T15p / P15v Gen 2 (2x SO-DIMM) • X1 Extreme / P1 Gen 3 (2x SO-DIMM) • P15 / T15g / P17 Gen 1 (4x SO-DIMM) All other models have completely or partially soldered RAM. Partially soldered are: • T14 / T15 Gen 2 (1x SO-DIMM, 8 to 16 GB on-board) • P14s / P15s Gen 2 (1x SO-DIMM, 8 to 16 GB on-board) • E14 / E15 Gen 2 (1x SO-DIMM, 8 GB on-board, AMD only)

[1] https://www.reddit.com/r/thinkpad/comments/md59tv/newer_thin...

amts··on Ask HN: Shuold I buy a new ThinkPad E14 with soldered RAM or a used T480?
Here [1] is a more detailed description of the situation (post #23).

I'm like 98% oriented towards Thinkpad E14 gen2 AMD Ryzen3 4300U 4 cores (1, 2) due to backlit keyboard, aluminum casing (sort of mil-tested), IPS FHD display (which I hope to have at least 250 nits of brightness), no PWM flickering and USB-C charging port. 16GB RAM and 512gb or 1T SSD.

[1] https://ubuntuforums.org/showthread.php?t=2481902&page=3

My current budget is 650 euros (getting from suppliers in Baltic EU), gen 1 or 2 may fit, if other specs are ok.

amts··on Ask HN: If money was no object what software would you create?
I'd create: 1) an Iris type software to have zero blue light and zero PWM flicker at low brightness for code editors (Pycharm, maybe) while retaining the capability to discern color highlighting in the editor 2) an Android emulation for Oracle virtual machine to run mobile apps on a laptop with wired internet connection
amts··on “After 8 months of Blueprint I reduced my epigenetic age by 5.1 yrs in 7 months”
<<Anyway, the idea that the beneficial effects of vegetables are due to plant defenses isn't an unusual idea

The beneficial effects of plant-based diets (according to Sinclair, podcasts) is due to lower activation of mTor by plant protein vs. animal protein (also apart from various beneficial plant fibers, flavonols and polyphenols). Animal protein activates mTor most highly, and it is the inhibition of mTor (after main development) that correlates most robustly with healthspan.

amts··on Aks HN: Can additional processor core be emulated on SSD for more compute power?
> What's your budget for a ThinkPad? Maybe 300-400 euros, but it's currently potentially diminishing.

> Why do you want a ThinkPad in particular? In [1] I was advised to aquire used T and X series Thinkpads instead of Dell. And I googled, with specific attention to display features (PWM) and build quality, and it seems that Thinkpads seem to provide similar or better overall quality vs more expensive Dell XPS and others.

Potential CPU is i5-6300U + 8 GB RAM and 512 or 1Tb SSD (updated/refurbrished Lenovo T470 thinkpad with 14" display and 2 year waranty (the local seller I may buy from is providing 2 year warranty on used thinkpads and 0.5 year on battery, which seems safer than on ebay)).

[1] https://news.ycombinator.com/item?id=33607054

amts··on Aks HN: Can additional processor core be emulated on SSD for more compute power?
Emulator can be a program with some type of linked list, whose core can emulate computations, which may be stored on various types of memory. In some types of emergencies when all CPUs and RAMs are busy, it can be handy. Maybe part of computational operations (like comparisons) can be done by CPU. Truth tables are essentially the already computed results of basic AND/OR/XOR operations, so at least these operations may be emulated on a storage via selection of a predefined result of computation. But whatever (I hope I won't run out of functionality provided by 2 cores).
amts··on Aks HN: Can additional processor core be emulated on SSD for more compute power?
"it" = some type of linked list. You can have the truth table, for example, for an "AND" gate be statically defined as 4 cells each for every possible result in the list (like 1 and 1 is 1, 1 and 0 is 0 etc). So when there's 1 and 1 in the input cells, the linked cell storing 1 is selected: basic if, else logic. Sort of, if all possible results of basic logic operations would be statically stored on an SSD, and the emulator would just select the needed one based in inputs. And these inputs could be just a data array stored in another place on an SSD. I am not asking myself why this hasn't just miraculously happened, but am sure that if enough physical logic elements of an SSD are emulated, this may provide venue for emulating basic computational operations.
amts··on Aks HN: Can additional processor core be emulated on SSD for more compute power?
Of course it would be slower, but suppose time is not a priority while performing computations. CPU could start and stop the emulation, perform some memory management, but not the computation itself. Like, some type of linked list on an SSD, it would take a bit from an input cell, which is linked to a logical "NOT" cell, which will reverse this bit to zero (which is easy to just assume an opposite value), and send the result to the next linked "output" cell.
amts··on Aks HN: Can additional processor core be emulated on SSD for more compute power?
Do you mean that any time when, for example, some electronic circuits CAD software simulates the working of a logic "NOT" gate, it needs to actually access this logic gate circuit instance in the CPU?
amts··on What You (Want to)* Want
He needs at least ketamine to test this hypothesis, otherwise it's just another one overfitting of overgeneralization.
amts··on Aks HN: Can additional processor core be emulated on SSD for more compute power?
> really Can't a CPU be emulated on anything having a representation of 1 bit or 0 bit?
amts··on What You (Want to)* Want
He should try to rewrite this topic in ketamine and/or other dissociatives and with appropriate combinations of set&setting, otherwise it's just another one biased opinion.
amts··on Ask HN: Is this Dell laptop good for beginner programming? If no, what else?
Is this Lenovo thnkpad E15 gen2 (AMD) [1] decent for programming and business? The only hindrance is that it is unclear whether it has a backlit keyboard, but I googled and it seems that it can be at least possible to replace a keyboard to the backlit [2]

I used to think that the more warranty time is provided by the manufacturer, the better, as 3y for Dell. The local seller just told that the less is the warranty time, the more high quality is the product, as they're sort of so sure of it's quality. And this Thinkpad E15 has 1y of warranty. It is not T or X series, but it has 15.6" display etc, is this series ok?

[1] [link redacted]

[2] https://forums.lenovo.com/t5/ThinkPad-11e-Windows-13-E-and-E...

amts··on Ask HN: Is this Dell laptop good for beginner programming? If no, what else?
For flicker etc they offer some "Health Guard", but with totally zero description and features. I use Iris (iristech.co) free version with redshift for this.
amts··on Ask HN: Is this Dell laptop good for beginner programming? If no, what else?
This review seems solid, but the whole site seems to specialize on gaming laptops.
amts··on Ask HN: Is this Dell laptop good for beginner programming? If no, what else?
The cheapest local supplier offers used Lenovo Thinkpads X series with 2y warranty, but they have 12 inch display. It seems too small. And other Lenovo thinkpads with 15.6" display are L570 or Yoga series. And they all come with i5 2 processor cores only (and windows preinstalled). There's an option [1] Lenovo thinkpad E15 gen2 with AMD 4 cores, and the supplier told it is a better option than Dell in terms of durability.

[1] https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_E...

amts··on Ask HN: Shouldn't high inflation incentivize more startups to produce mo value?
It is rather strange that there are so many rather unoptimal headlines from knowledgeable sources about "Global recession" and "Soaring inflation", while you can take more Lion's Mane, for example, and invent and build more products, factories, technologies etc or more innovate and optimize the existing ones.

Interest rate imply borrowing money under a specific agreement and such borrowing seems not to be necessary in every case.

amts··on Stanford catalyst that can turn CO2 into gasoline 1k times more efficiently
> considering the potential explosiveness of the mixture of methane and oxygen

In Sabatier reaction [1] oxygen binds to hydrogen to produce H2O. Oxygen being highly electronegative could easily bind +1/+2 valence compounds.

Alternatively, nickel and aluminum catalysts for CH4 production from CO2 are also effective.

The fact that EU officials make so much idiotic hustle regarding fossil fuels only shows how severely underdosed in compounds from a number of categories they are.

[1] https://en.wikipedia.org/wiki/Sabatier_reaction#Creation_of_...

amts··on Ask HN: How many developers think they detect 11 mln bits of info per second?
Yeah, I expected such bs explanation. Naval Ravikant at nav.al also mentions in a related podcast that counting bits per second for human cognition is just bs. But nevermind. You just do the following: you are an actual developer, go code while simultaneously counting every second and how many bits per second you handle, afterwards provide estimates of quality of this code. In this option there is no assuming that we can use the full input bandwidth.

I'd add the following to the 1) of the formulation: how many actual developers would just believe (unable to actually calculate by themselves) the above mentioned 11 mln bits per second AND what code quality/contribution to CS do they produce.

amts··on Ask HN: How many developers think they detect 11 mln bits of info per second?
Thanks for the opinion, but the topic implies the conjunction of several sets: 1) actual developers & able to calculate that they really collect 11 mln bits of information per second OR 2) actual developers & able to calculate how many bits per second they handle during programming & able to correlate the latter with the quality of code
amts··on Ask HN: Should I tell cofounders/investors to optimize my env before startup?
I see, but sometimes there are such statements like "we invest in founders". Founders are expected to execute on stuff. And if I had been given full time in a low cost country with good internet infrastructure I'd execute on >80% on startup related things. On the other hand, I can quote a founder in quantum mechanics in favor of providing optimal living conditions for startup founders. Would it sound redundant or whatever?
amts··on Ask HN: How to bypass root passsw/passphrase in Ubuntu 18 GRUB for beginners?
I am actually interested why a working Ubuntu 18 password, although with user apps/Desktop locked under passphrase, after a relatively long period of non-usage stopped working. It was a sort of simple password and entering it was easy, so probability of multiple incorrect attempts should have been low. Are there some default values of incorrect password attempts/periods of non-usage etc upon installation or anything else?
amts··on Ask HN: How to bypass root passsw/passphrase in Ubuntu 18 GRUB for beginners?
What's the point of mounting to another computer, if it is a laptop Ubuntu (with dual boot with Windows 8) and Ubuntu partition can be remounted with write permission in GRUB?
amts··on Ask HN: How do experimental research companies exist financially?
What was the idea?
amts··on Ask HN: How do you repair your personal C? Advice on thermal paste?
<<Is the battery fresh? I don't know, I rarely use on battery, so should be. <<Does it overheat running on battery and/or wall power? On wall power <<Do you have a plan if you loose/strip screws and cannot reassemble the computer? As indicated in an answer on ifixit, I plan to put screws in dedicated containers with marked down sticky notes. But I can't afford a blank screen after reassembly,though this should probably indicate to recheck some display bus connections, as I will need to disassemby the display module too to repair the left bottom frame part and the hindge. I also have a second ASUS notebook, it is minimally functional for work (4GB RAM, with USB ports and the audio port unstable function probably due to exposure to air humidity). But there's Ubuntu 16.04, which is mainly locked up by tripwire (probably a tiger Linux app extension) requiring a passphrase after multiple incorrect attempts of entering the user password.
amts··on Ask HN: How do you repair your personal C? Advice on thermal paste?
50°C as shown by psensor app. <<Are you sure it completely locks up? No, if I don't wait for ~20 minutes or more for mouse/keyboard to be activated, I reboot after ~5 minutes of "frozen" state. CTRL+ALT+F1 brings to the system concole normally
amts··on Ask HN: How do you repair your personal C? Advice on thermal paste?
Yes, the overheats seem strange, given the 8GB RAM and 250GB ssd. It overheats (up to 50C) and freezes generally when I have several browsers opened (incl. Tor) with dozens of tabs, a Windows 8 VM instance running (with or without active connection from there to a remote desktop) and an Audacious player active. But the last time it overheated was when I was installing Jupiter notebook and Anaconda, separately. According to psensor Linux app I use for monitoring, the max CPU load so far was 51%, for free memory - ~4%. I was also advised to reinstall my current Ubuntu 20.04. Can it be this is due to Ubuntu issues?
amts··on Ask HN: Can residents impact gas consumption in Europe
For residential apartments: ensure good heat insulation, you can use portable electric heaters with AC pluggable input or run them on free energy sources. A diy heating type is to burn candles covered by clay pots, which serve as heat conductors. There are reports on youtube that one small candle with 2 clay pots can heat up to 20< m2 apartment for 4< hours or so (the temp in ~1m radius around the pots is ~70 Celsius after ~30 minutes). The drawback is that it consumes oxygen, but for this more oxygen producing plants can be placed indoors.
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