17:[[32245136,{"by":"nnethercote","descendants":112,"id":32245136,"kids":[32245597,32245297,32247361,32245329,32248795,32246203,32245498,32245922,32250950,32245335,32248571,32246151,32245563,32247167,32248196,32245497,32250811,32265239,32257301,32261317,32246372,32252221,32247379,32245317,32245520,32250517,32248257,32245878,32246028,32247163,32246826,32246041,32246873],"score":626,"time":1658876357,"title":"Twenty years of Valgrind","type":"story","url":"https://nnethercote.github.io/2022/07/27/twenty-years-of-valgrind.html"}],[31312820,{"by":"loh","descendants":247,"id":31312820,"kids":[31351905,31352028,31353486,31353180,31351874,31351147,31352716,31351534,31351716,31351608,31353705,31352578,31354038,31352270,31353151,31353244,31352548,31354622,31351876,31353642,31354283,31351371,31352619,31353292,31351472,31348054,31354753,31353534,31352909,31354261,31354652,31352323,31356069,31354539,31353370,31353127,31352849,31351536,31351872,31351447,31354109,31354071,31354893,31351172,31351475,31352540,31354382,31352315,31351844,31354017,31354529,31354197,31353814,31355138,31353620,31352250,31353563,31354624,31355066,31354275,31354118,31352536,31353943,31354067,31351477,31353059,31354901,31353526,31351976,31351446,31355206,31352957,31351904,31354403,31382873,31353765,31353255,31351529,31354777,31352437,31353308,31351996,31353385,31354410,31353541,31351346,31312853,31355310],"score":272,"text":"Running a business is hard. Startups are even harder. A lot of it comes down to not actually knowing what you're doing wrong.

What are some important observations and lessons you've learned working at startups and running businesses that were not immediately obvious (both technical and non-technical)? Did you learn the hard way?","time":1652095421,"title":"Ask HN: Important nonobvious startup/business lessons you've learned?","type":"story"}],[30617118,{"by":"fatmoron","descendants":1025,"id":30617118,"kids":[30626106,30627399,30624918,30628783,30624420,30624175,30625836,30618217,30626032,30625021,30624914,30628826,30626570,30628225,30624283,30623960,30625019,30625875,30618377,30618208,30624716,30625976,30624231,30626063,30626105,30625298,30625387,30645199,30624323,30625960,30624443,30618473,30627545,30632640,30625242,30625616,30617449,30624038,30624143,30625599,30624314,30624700,30624134,30628220,30617793,30624195,30625516,30627155,30624369,30624000,30625538,30624174,30625395,30624538,30627059,30627056,30628753,30627554,30626279,30625022,30627517,30624690,30625925,30630303,30625182,30628157,30625150,30625640,30618602,30625866,30624379,30627678,30626665,30625574,30624376,30624198,30628965,30626419,30628908,30617420,30625892,30624986,30624821,30624578,30625132,30624056,30625073,30628697,30627265,30625326,30636518,30626167,30628268,30660614,30624414,30624121,30626391,30625655,30624072,30626110,30627687,30627652,30625209,30627752,30648260,30625371,30626634,30625184,30627278,30624772,30625521,30626387,30626352,30649042,30624023,30638115,30627299,30627552,30618130,30627146,30624901,30626223,30625977,30638419,30626220,30646883,30626913,30625258,30626633,30624946,30626188,30625641,30641686,30625490,30627429,30625995,30624898,30627777,30624498,30625166,30629885,30625016,30618807,30629560,30625961,30624572,30628580,30628139,30628198,30617860,30677441,30625239,30624549,30624805,30617288,30617414,30627269,30625979,30630219,30627568,30627407,30618158,30624781,30625837,30625752,30624401,30624297,30630129,30624598,30625107,30624304,30625569,30628442,30624600,30624045,30618256,30627474,30630087,30624647,30617585,30626218,30625771,30627742,30630974,30628995,30632984,30627725,30625697,30630932,30618544,30642380,30627895,30626847,30626301,30626425,30624532,30626944,30624745,30633787,30626018,30624727,30628307,30625618,30624571,30625691,30624262,30630072,30624526,30627567,30626045,30617809,30624636,30626139,30628091,30627086,30627738,30625720,30624501,30624873,30624882,30624197,30624778,30626206,30625621,30627527,30624343,30625135,30624119,30624814,30627181,30626531,30624896,30627064,30626501,30625667,30624848,30625288,30625217,30625612,30624912,30628462,30624306,30626707,30625561,30624979,30626576,30626314,30650490,30626784,30625276,30625997,30633989,30624477,30711205,30624062,30624140,30632825,30635106,30629090,30625476,30631546,30629035,30625161,30624982,30626873,30624978,30626107,30626682,30646573,30628782,30625643,30623991,30617916,30625992,30625754,30626162,30627302,30627883,30625528,30626036,30625999,30617529,30625225,30627375,30626831,30627503,30625374,30647434,30626030,30624238,30626234,30624120,30625681,30627126,30627160,30625056,30624888,30625658,30626980,30624744,30624307,30624784,30624806,30625942,30627054,30626284,30646718,30632671,30623951,30618041,30624925,30625795,30628340,30625109,30628162,30626178,30623927,30627172,30630201,30624363,30625237,30625216,30626861,30626649,30624714,30619458,30625519,30624582,30627213,30627812,30624922,30624591,30626082,30626246,30617922,30627210,30633062,30626985,30625814,30625416,30624009,30628535,30625850,30632792,30624453,30623922,30625286,30625099,30625133,30624851,30626038,30626261,30625321,30630759,30627824,30626766,30626047,30625278,30625695,30624135,30617593,30626221,30627186,30623981,30630177,30625585,30627337,30625032,30624503,30626787,30626331,30617376,30626353,30624519,30624842,30624780,30626249,30637937,30625401,30632418,30651355,30626520,30624910,30624559,30627284,30628774,30628224,30625895,30625634,30628233,30627466,30628894,30628620,30627737,30628248,30625080,30626247,30626386,30624869,30626343,30626321,30626401,30626100,30640226,30627858,30627253,30627033,30627218,30628570,30631007,30624759,30627502,30625059,30627765,30625317,30623989,30625330,30625254,30624635,30629967,30624427,30625910,30627719,30628654,30625638,30630200,30624276,30625359,30624881,30625849,30624676,30617282,30624354,30617618,30625533,30646180,30618475,30644851,30626805,30627772,30624562,30624084,30625432,30624976,30624640,30627262,30624077,30628817,30628471,30626997,30624390,30639388,30626999,30625091,30617309,30627551,30627505,30624792,30624632,30627745,30628671,30626727,30627282,30624493,30628154,30627697,30624617,30624965,30626354,30626522,30627512,30626238,30625579,30625003,30625349,30625117,30625012,30626864,30624136,30628017,30628644,30624043,30626896,30625119,30624637,30624492,30624793,30632737,30628475,30624021,30629515,30623988,30625598,30630298,30625037,30626078,30625669,30624992,30626368,30624541,30646459,30624846,30625817,30627756,30648625,30639129,30627693,30623957,30654521,30621670,30627369,30632616,30627894,30625587,30628482,30625870,30624755,30625762,30618073,30624695,30617748,30625693,30624516,30626180,30624104,30648457,30630275,30630222,30630169,30629066,30628683,30628681,30627531,30626854,30626773,30626486,30626265,30625404,30624672,30624233,30624972,30624338,30628561,30680333,30628649,30621650,30624022,30626210,30624095,30625828,30626142,30624447,30625821,30665593,30626777,30630117,30617574,30624701,30642440,30629990,30625075,30624664],"score":332,"text":"I am overweight and just curious. My theory, though untested, is that getting an oxygen tank might speed up passive weight loss substantially. 84% of all weight that is lost is in the form of carbon dioxide, and I wonder if upping the amount of carbon dioxide exhaled would lead to more weight loss. Oxygen only makes up 21% of our air. I am making the assumption that the lungs can handle being 100% saturated.","time":1646846106,"title":"Ask HN: Any weird tips for weight loss?","type":"story"}],[30413629,{"by":"rixed","descendants":138,"id":30413629,"kids":[30414289,30413970,30414068,30414397,30414274,30418075,30414305,30414386,30413825,30416509,30413814,30414091,30414941,30414389,30413794,30413923,30413992,30414204,30414267,30421061,30415109,30414259,30414629,30413961,30423920,30414264,30413958,30414510,30415251,30414323,30414211,30414563,30414255,30414793,30414651,30414458,30423535,30418150,30416220,30415331,30415536,30414087,30414715,30414090,30430838,30415024,30414061,30426963,30414403,30414226,30414333],"score":74,"text":"Not that progress should be denied entirely, but I often think that the past gets discarded too quickly and many good ideas got lost with the bath water. I'm certainly not the only one to feel that way.

So I'm wondering what such good ideas that have disappeared can other HNers remember.

I'll start:

In the golden age of sun stations, the BIOS was written in forth, and the ROM contained a forth interpreter. Not only all extension cards ROM was interpreted and therefore all extension cards were architecture independent, but you were given a Forth REPL to tinker around the boot process, or in fact at any later point once the system had started with a special key combination.

That was in my opinion way ahead of the modern BIOSes, even taking into account OpenBIOS.

Your turn?","time":1645435575,"title":"Ask HN: What was better in the past in tech?","type":"story"}],[24625281,{"by":"johnnydoe9","descendants":222,"id":24625281,"kids":[24626725,24626787,24626791,24626468,24632958,24626279,24627044,24626240,24626956,24626264,24629910,24627136,24626247,24626728,24628279,24626635,24627066,24626974,24631352,24627192,24626754,24626554,24627025,24626801,24626707,24626836,24626778,24626502,24630217,24627230,24626854,24626189,24627283],"score":254,"time":1601367653,"title":"Amnesty International India Halts Its Work in India Due to Government Reprisal","type":"story","url":"https://amnesty.org.in/news-update/amnesty-international-india-halts-its-work-on-upholding-human-rights-in-india-due-to-reprisal-from-government-of-india-2/"}],[24572108,{"by":"hoffmannesque","descendants":159,"id":24572108,"kids":[24576476,24574402,24576897,24574828,24574463,24576473,24574404,24577307,24576320,24576981,24574526,24574637,24577999,24576892,24578650,24575188,24576911,24576258,24575090,24577077,24576481,24574444,24574859,24578138,24576256,24574281],"score":117,"time":1600895564,"title":"The Cement of Society Is...","type":"story","url":"http://branemrys.blogspot.com/2020/09/the-cement-of-society-is.html"}],[24243899,{"by":"Osiris30","descendants":227,"id":24243899,"kids":[24245129,24244350,24244675,24244343,24245384,24248300,24245021,24244309,24246223,24245379,24244321,24248381,24245921,24245118,24244236,24247810,24248603,24244845,24245728,24250884,24254265,24245642,24245691,24245684,24246254,24244846,24244595,24244858],"score":227,"time":1598101959,"title":"Mystery of interstellar visitor 'Oumuamua gets trickier","type":"story","url":"https://www.scientificamerican.com/article/mystery-of-interstellar-visitor-oumuamua-gets-trickier/"}],[23798347,{"by":"danicgross","descendants":131,"id":23798347,"kids":[23800049,23799050,23799122,23799411,23801862,23801029,23798482,23800804,23802487,23800320,23801491,23802189,23804594,23799995,23799728,23802741,23800803,23799722,23800692,23800773,23800529,23798538,23799764,23800054,23799991,23799271,23800982,23800069,23801572,23800937,23801701,23802454,23799872,23802356,23800491,23799018,23803072,23802879,23800816,23800828,23800893,23800459,23800534,23798710,23803058,23822984,23800344,23799682,23799913,23801173,23799988,23798870,23802436,23800898,23799129,23800207,23815594,23800930,23800874,23801964,23802815,23802993,23802363,23800216,23801759,23802661,23802142,23801732,23800742,23802127,23798619,23803353,23800666,23798697,23802049,23801090,23800713,23802751,23801200,23801758],"score":151,"text":"Hi HN,

I work with a company that has a few GPU-intensive ML models. Over the past few weeks, growth has accelerated, and with that costs have skyrocketed. AWS cost is about 80% of revenue, and the company is now almost out of runway.

There is likely a lot of low hanging cost-saving-fruit to be reaped, just not enough people to do it. We would love any pointers to anyone who specializes in the area of cost optimization. Blogs, individuals, consultants, or magicians are all welcome.

Thank you!","time":1594428381,"title":"Ask HN: How can I quickly trim my AWS bill?","type":"story"}]]

user:	ssrs
created:	July 11, 2020
karma:	10