{"id":37033,"date":"2019-10-31T22:15:24","date_gmt":"2019-10-31T19:15:24","guid":{"rendered":"https:\/\/prohoster.info\/blog\/alan-kej-kak-by-ya-prepodaval-computer-science-101\/"},"modified":"2021-01-02T13:01:57","modified_gmt":"2021-01-02T11:01:57","slug":"alan-kej-kak-by-ya-prepodaval-computer-science-101","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/alan-kej-kak-by-ya-prepodaval-computer-science-101","title":{"rendered":"Alan Kay: kuidas ma \u00f5petaksin Computer Science 101","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<blockquote><p><i>\u201e\u00dcks p\u00f5hjus, miks tegelikult \u00fclikooli astuda, on see, et \u00fcletada lihtsalt ametialane ettevalmistus ja haarata hoopis s\u00fcgavamaid ideid.\u201d<\/i><\/p><\/blockquote>\n<p><img decoding=\"async\" alt=\"Alan Kay: kuidas ma \u00f5petaksin Computer Science 101\" src=\"\/wp-content\/uploads\/2019\/08\/96ab548e42e799101aa37454222f2a72.jpg\" style=\"display:block;margin: 0 auto;\"><\/p>\n<p>M\u00f5elgem sellele natuke. M\u00f5ni aasta tagasi kutsusid mind Computer Science osakonnad mitmetes \u00fclikoolides loengute pidamiseks. Peaaegu juhuslikult k\u00fcsisin oma esimeselt auditooriumilt, kuhu kuulusid vanemad \u00fcli\u00f5pilased, doktorandid ja professorid, nende m\u00f5isted \u201eComputer Science\u201d. K\u00f5ik suutsid anda ainult inseneritehnilise definitsiooni. Olen seda igas uues kohas teinud ja igal pool on olnud sarnased tulemused.<\/p>\n<p>Teine k\u00fcsimus oli: \u201eKes on Douglas Engelbart?\u201d M\u00f5ned inimesed \u00fctlesid: \u201eKas ta ei olnud kuidagi seotud arvutihiirega?\u201d (ja see pettis mind v\u00e4ga, sest minu teaduslik kogukond on teinud palju t\u00f6\u00f6d, et sellele k\u00fcsimusele vastamine oleks v\u00f5imalik p\u00e4rast paari kliki hiirega ning veenduda, et Engelbart oli t\u00f5esti arvutihiirega kuidagi seotud).<\/p>\n<p>Osa probleemist oli seotud uudishimu puudumisega, osa aga isiklike eesm\u00e4rkide kitsaskohaga, mis ei olnud seotud \u00f5ppimisega, ja osa \u2013 arusaamatusega, mis see teadus endast kujutab jne.<\/p>\n<p>Olen t\u00f6\u00f6tanud California \u00fclikooli arvutitehnika instituudis osalise t\u00f6\u00f6ajaga juba mitu aastat (tegelikult olen professor, kuid mul ei ole vaja osaleda osakonna koosolekutel). Aeg-ajalt \u00f5petan ma ka esmakursuslasi. Nende aastate jooksul on juba niigi madal uudishimu arvutiteaduse vastu veelgi v\u00e4henenud (aga populaarsus on t\u00f5usnud, kuna arvutitehnika n\u00e4hakse kui teed h\u00e4sti tasustatud t\u00f6\u00f6ni, kui oskad programmeerida ja oled l\u00f5petanud parima 10 kooli). Seet\u00f5ttu ei ole \u00fckski \u00fcli\u00f5pilane veel kaebanud, et California \u00fclikoolis on algkeeleks C++!<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nMul on tunne, et oleme olukorras, kus m\u00f5lemad m\u00f5isted 'Computer' ja 'Science' on kahjustatud madala kvaliteediga kontseptsioonide t\u00f5ttu, et luua uus termin \u2014 omamoodi sildistamine teksastele \u2014 mis k\u00f5lab h\u00e4sti, kuid on piisavalt t\u00fchi. Seonduv m\u00f5isted, mis on samuti kahjustatud, on 'programmeerimise inseneriteadus', mis taas ei kasutanud k\u00f5ige nutikamaid ideid 'programmeerimisest' ja 'inseneriteadusest', vaid lihtsalt kombineeris need (see tehti teadlikult kuuek\u00fcmnendatel, kui termin loodi).<\/p>\n<p>\u00dcks p\u00f5hjus, miks t\u00f5eliselt \u00fclikooli minna, on ulatuda kaugemale lihtsalt ametialasest ettevalmistusest ja hoopis haarata s\u00fcgavamate ideede k\u00fclge. Tundub \u00fcsna m\u00f5istlik \u00fcritada, kui v\u00f5imalik, n\u00e4idete abil, et \u00f5ppijad tegeleksid reaalsete probleemidega ja hakkaksid m\u00f5istma, mis on selles valdkonnas t\u00f5eliselt huvitav, oluline ja keskne.<\/p>\n<p>Esimese klassi \u00f5pilased r\u00f5\u00f5mustavad, kui neile n\u00e4idatakse, kuidas joonlaud teise joonlaua peale asetades muutub arvutiks, millega nad saavad viiendike poisid \u00fcletada, kui nad lisavad murdarvu. Seej\u00e4rel on nad \u00f5nnelikud osalema t\u00e4iustatud arvutite arendamisel. Nad puutuvad kokku t\u00f5elise arvutiga \u2014 f\u00fc\u00fcsilise ja vaimse t\u00f6\u00f6riistaga, mis aitab meil m\u00f5elda. Nad on \u00f5ppinud t\u00f5eliselt t\u00f5husat viisi numbrite esitamiseks \u2014 efektiivsem, kui \u00f5petatakse koolides!<\/p>\n<p>Nad suutsid \u00fchendada oma selge idee \u00ablisamisest\u00bb kui \u00abkogumisest\u00bb millegi analooge uute v\u00f5imsate omadustega. Nad programmeerisid selle nii, et see oleks v\u00f5imeline lahendama erinevaid probleeme.<\/p>\n<p>Nad laiendasid seda ka. Ja nii edasi. See ei ole digitaalne arvuti. Ja see ei ole m\u00e4luprogrammiga arvuti. Aga see on arvuti olemus. Just nagu <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%90%D0%BD%D1%82%D0%B8%D0%BA%D0%B8%D1%82%D0%B5%D1%80%D1%81%D0%BA%D0%B8%D0%B9_%D0%BC%D0%B5%D1%85%D0%B0%D0%BD%D0%B8%D0%B7%D0%BC\">Antikythera mehhanism<\/a><\/noindex> \u2014 see on \u00fcldiselt arvuti ja arvutamise olemus.<\/p>\n<p><img decoding=\"async\" alt=\"Alan Kay: kuidas ma \u00f5petaksin Computer Science 101\" src=\"\/wp-content\/uploads\/2019\/08\/f19420d6cc2e21a47ee57082583cee7b.jpg\" style=\"display:block;margin: 0 auto;\"><\/p>\n<p><i>Antikythera mehhanism<\/i><\/p>\n<p>Kui kaugele me saame minna ja kui palju teha, enne kui k\u00f5ik l\u00e4heb s\u00f5na otseses m\u00f5ttes hulluks ning me kaotame end abstraktsioonides? Ma olen alati olnud huvitatud iseloomustest. <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%9F%D0%B5%D1%80%D0%BB%D0%B8%D1%81,_%D0%90%D0%BB%D0%B0%D0%BD_%D0%94%D0%B6%D0%B5%D0%B9\">Alan Perlis<\/a><\/noindex> \u2014 esimene Turingi auhinna laureaat, kes v\u00f5ib-olla v\u00e4ljakutsus m\u00f5iste \u201eArvutiteadus\u201c \u2014 kes 60ndatel \u00fctles: \u201eArvutiteadus on protsesside teadus\u201c. K\u00f5ikide protsesside.<\/p>\n<p>Quora ettev\u00f5tte nimel p\u00fc\u00fcame mitte liialdada v\u00f5i muuta seda religioosseks dogmaks. Lihtsalt kasutagem seda m\u00f5tet r\u00f5\u00f5muga. <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%9F%D0%B5%D1%80%D0%BB%D0%B8%D1%81,_%D0%90%D0%BB%D0%B0%D0%BD_%D0%94%D0%B6%D0%B5%D0%B9\">Alan Perlis<\/a><\/noindex>, et paremini m\u00f5elda meie valdkonna \u00fcle. Eriti selle \u00fcle, kuidas seda \u00f5petada. Praegu peame vaatama teaduse kaasaegset t\u00e4hendust, ja Perlis oli \u00fcsna kindel, et see ei tohiks segada vanade t\u00e4hendustega (n\u00e4iteks \u201eteadmiste kogumisega\u201c) ja kasutustega (n\u00e4iteks \u201eraamatukogu teadus\u201c v\u00f5i isegi \u201esotsiaalteadused\u201c). Allt\u00e4hendusega \u201eteadus\u201c p\u00fc\u00fcdis ta m\u00f5ista n\u00e4htust, luues mudeleid\/kaarte, mis \u00fcritavad n\u00e4idata, \u201ej\u00e4lgida\u201c ja prognoosida n\u00e4htusi.<\/p>\n<p><img decoding=\"async\" alt=\"Alan Kay: kuidas ma \u00f5petaksin Computer Science 101\" src=\"\/wp-content\/uploads\/2019\/08\/4261c5930f18bbd0135d078e271b97e4.jpg\" style=\"display:block;margin: 0 auto;\"><\/p>\n<p>Olen andnud mitmeid intervjuusid selle kohta, kuidas parimad kaardid ja mudelid v\u00f5ivad sageli sobida T-s\u00e4rgi jaoks, just nagu Maxwelli v\u00f5rrandid ja teised. Analoogia seisneb selles, et on olemas \"sildade teadus\", kuigi enamik sildu on inimeste loodud. Kuid kui sild on ehitatud, peegeldab see n\u00e4htusi, mida teadlased saavad uurida; sildadest on v\u00f5imalik luua mitmesuguseid mudeleid ja v\u00e4lja t\u00f6\u00f6tada p\u00f5hjalikke ja kasulikke \"sildade teooriaid\". Lust on see, et seej\u00e4rel on v\u00f5imalik projekteerida ja ehitada uusi sildu (olen juba maininud, et kahtlemata ei ole midagi l\u00f5busamat kui teadlaste ja inseneride koost\u00f6\u00f6 suurte ja oluliste probleemide lahendamiseks!)<\/p>\n<p><img decoding=\"async\" alt=\"Alan Kay: kuidas ma \u00f5petaksin Computer Science 101\" src=\"\/wp-content\/uploads\/2019\/08\/5a665b0ea71d78609fadda6b5656d18e.jpg\" style=\"display:block;margin: 0 auto;\"><\/p>\n<p>Herbert Simon, T\u00dcuringi auhinna ja Nobeli preemia laureaat, nimetas seda k\u00f5ike \"tehisest teaduseks\" (ja kirjutas suurep\u00e4rase raamatu sama nimega).<\/p>\n<p><img decoding=\"async\" alt=\"Alan Kay: kuidas ma \u00f5petaksin Computer Science 101\" src=\"\/wp-content\/uploads\/2019\/08\/8ca3c2f720bf8b2d89c32c21995fc535.jpg\" style=\"display:block;margin: 0 auto;\"><\/p>\n<p>Olgu ma toon \u00fche n\u00e4ite. 50ndatel aastatel hakkasid ettev\u00f5tted ja \u00fclikoolid ehitama programmiga varustatud arvuteid ja neid programmeerima \u2014 ning 1956. aastal tuli eriti oluline hetk, kui ilmus Fortran \u2014 mis ei olnud esimene k\u00f5rgtaseme keel, kuid ilmselt esimene, mis oli tehtud nii h\u00e4sti, et seda kasutati paljudes erinevates valdkondades, sealhulgas paljutes, mis varem olid tehtud ainult masinakeeles.<\/p>\n<p>See k\u00f5ik andis t\u00f5uke \u201efenomenide\u201c tekkimisele.<\/p>\n<p><img decoding=\"async\" alt=\"Alan Kay: kuidas ma \u00f5petaksin Computer Science 101\" src=\"\/wp-content\/uploads\/2019\/08\/1cba395502087028f34004f327350dd8.jpg\" style=\"display:block;margin: 0 auto;\"><\/p>\n<p><i>John McCarthy<\/i><\/p>\n<p>Lisp'i ajalugu on keerulisem, kuid John McCarthy huvitas katse leida \u201ematemaatiline arvutusteooria\u201c ja ta oli kindel, et k\u00f5ik peab t\u00f6\u00f6tama t\u00e4iuslikult. Eval-funktsioon, mis t\u00f5lgendab Lisp'i, mahub kergelt T-s\u00e4rgile! V\u00f5rreldes \u201eprogrammeerimiss\u00fcsteemiga\u201c \u2014 on see t\u00fchine. Mis veelgi t\u00e4htsam, see \u201earvutusteooria\u201c sisaldas v\u00f5imsamat kontseptsiooni kui Fortran! See oli parim sildide idee!<\/p>\n<p>Lisp'i kompaktne natuur v\u00f5imaldab programmeerimise ideed haarata paari kliki kaudu s\u00fcgaval tasemel ning m\u00f5elda sellele viisil, mis n\u00e4ib olevat t\u00e4iesti v\u00f5imatu, kui vaatad suuri artefakte (see on \u00fcks p\u00f5hjuseid, miks teadlased eelistavad, et matemaatika oleks kompaktne ja v\u00f5imas). Siin kasutatud matemaatika on uus matemaatika, kuna ta lubab selliseid m\u00f5isteid nagu \"enne\" ja \"p\u00e4rast\", mis viib \"muutuva suuruse loogikani\", mis v\u00f5imaldab s\u00e4ilitada nii funktsionaalset s\u00f5ltuvust kui ka loogilist m\u00f5tlemist, v\u00f5imaldades samas positsiooni ja ajak\u00e4iku. (See pole endiselt meie ajal arusaadav karmis situatsioonilise programmeerimise maailmas).<\/p>\n<p>Lisp, olles v\u00f5imas programmeerimiskeel ja meta-keel, mis suudab esindada omaenda teooriat, on t\u00f5eline arvutiteaduse n\u00e4ide. Kui \u00f5pite seda ja teisi sarnaseid asju, suudate m\u00f5elda s\u00fcgavamalt ja vastutada oma saatuse eest rohkem kui siis, kui \u00f5pite lihtsalt Fortranit v\u00f5i selle kaasaegseid ekvivalente (... nii suudate l\u00e4heneda programmeerijatele!).<\/p>\n<p>Te saate palju rohkem teada spetsiaalsetest disainivormidest, mis on arvutustes vajalikud (n\u00e4iteks ei hinnata tavaliselt, kui arvutused n\u00f5uavad sageli v\u00e4ljapanekut arvutuskeskkonnast v\u00e4ljaspool: \u00fcks h\u00e4lbiva programmi omadustest on see, et see pole lihtsalt programmimaterjal, vaid t\u00e4iesti uue arvuti materjal).<\/p>\n<p>Teine p\u00f5hjus, miks Perlissi m\u00e4\u00e4ratud m\u00f5isted on populaarsed, seisneb selles, et arvutamine on \u00fcldiselt palju tihedamalt seotud mitmesuguste s\u00fcsteemide loomisega kui algoritmide, 'andmestruktuuride' v\u00f5i isegi programmeerimisega endaga. N\u00e4iteks arvuti on s\u00fcsteem, arvutused on s\u00fcsteemid, lokaalne v\u00f5rk ja internet on s\u00fcsteemid ning enamiku rakenduste puhul peaksid need olema paremad s\u00fcsteemid kui need, millised nad praegu on (vana stiili programmeerimine 50ndatest p\u00fcsib ikka veel, mist\u00f5ttu tundub, et programmeerimine peab olema selline \u2014 t\u00f5est on kaugel midagi muud).<\/p>\n<p>Internet on hea n\u00e4ide \u2014 erinevalt enamikest t\u00e4nap\u00e4eva programmidest ei pea internetti peatama, et midagi parandada v\u00f5i t\u00e4iustada \u2014 see sarnaneb rohkem bioloogilise s\u00fcsteemiga, mitte sellele, mida enamik inimesi arvab arvutis\u00fcsteemist. Ja see on palju skaleeritavam ja usaldusv\u00e4\u00e4rsem kui peaaegu k\u00f5ik programmid, mis t\u00e4nap\u00e4eval olemas on. See on t\u00f5eliselt m\u00f5tlemapanev enne, kui \u00f5petada algajaid programmeerimisele v\u00e4hem t\u00f5husate kontseptsioonide kaudu!<\/p>\n<p>Nii et meie esimese arvutiteaduse kursuse eesm\u00e4rk on arvestada seda, mida kaas\u00f5pilased saavad alguses teha, ja seej\u00e4rel p\u00fc\u00fcda j\u00e4\u00e4da nende \u00abkognitiivsete koormuste\u00bb piiridesse, et aidata neil j\u00f5uda selleni, mis t\u00f5eliselt oluline. On v\u00e4ga oluline \u00abolla autentne\u00bb ja leida teid, mis oleksid intellektuaalselt ausad ja sobivad neile, kes alles alustavad \u00f5ppimist. (Palun \u00e4rge \u00f5petage halbu ideid ainult sellep\u00e4rast, et need tunduvad veidi lihtsamad \u2014 palju halbu ideid on tegelikult palju lihtsamad!).<\/p>\n<p>\u00dcli\u00f5pilased peaksid alustama millegi loomisest, millel on palju olulisi omadusi, millest ma siin r\u00e4\u00e4kisin. See peaks olema s\u00fcsteem, mis koosneb mitmest d\u00fcnaamiliselt omavahel seotud osast ja nii edasi. Hea viis otsustada, millist programmeerimiskeelt kasutada, on lihtsalt teha midagi, millel on tuhandeid omavahel suhtlevaid osi! Kui see ei ole v\u00f5imalik, siis peaksite leidma sellise. K\u00f5ige hullem, mida teha, on suunata \u00fcli\u00f5pilased liiga n\u00f5rgale tagasisidele, mis piiraks oluliselt t\u00e4htsaid ideid. See tapab neid \u2014 ja me tahame neid kasvatada, mitte tappa.<\/p>\n<h3>GoTo koolist<\/h3>\n<p><img decoding=\"async\" alt=\"Alan Kay: kuidas ma \u00f5petaksin Computer Science 101\" src=\"\/wp-content\/uploads\/2019\/08\/28235f4dad6945d149e364f46e71e083.jpg\" style=\"display:block;margin: 0 auto;\"><\/p>\n<ul>\n<li>17.-30. juuni, 15.-28. juuli, 12.-25. august <noindex><a rel=\"nofollow\" href=\"https:\/\/goto.msk.ru\/camp_summer\/\">Suvised projekti GoTo koolid Moskva oblastis.<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/vk.com\/goto_msk\">Grupis VK<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/goto.msk.ru\/about_us\/\">Telli uudiskiri<\/a><\/noindex><\/li>\n<\/ul>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/goto\/blog\/352090\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u00ab\u041e\u0434\u043d\u0430 \u0438\u0437 \u043f\u0440\u0438\u0447\u0438\u043d, \u0447\u0442\u043e\u0431\u044b \u043d\u0430 \u0441\u0430\u043c\u043e\u043c \u0434\u0435\u043b\u0435 \u043f\u043e\u0441\u0442\u0443\u043f\u0438\u0442\u044c \u0432 \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442 \u2014 \u044d\u0442\u043e \u0432\u044b\u0439\u0442\u0438 \u0437\u0430 \u0440\u0430\u043c\u043a\u0438 \u043f\u0440\u043e\u0441\u0442\u043e\u0439 \u043f\u0440\u043e\u0444\u0435\u0441\u0441\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0439 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043a\u0438 \u0438 \u0432\u043c\u0435\u0441\u0442\u043e \u044d\u0442\u043e\u0433\u043e \u0443\u0446\u0435\u043f\u0438\u0442\u044c\u0441\u044f \u0437\u0430 \u0431\u043e\u043b\u0435\u0435 \u0433\u043b\u0443\u0431\u043e\u043a\u0438\u0435 \u0438\u0434\u0435\u0438.\u00bb \u0414\u0430\u0432\u0430\u0439\u0442\u0435 \u043d\u0435\u043c\u043d\u043e\u0433\u043e \u0437\u0430\u0434\u0443\u043c\u0430\u0435\u043c\u0441\u044f \u043d\u0430\u0434 \u044d\u0442\u0438\u043c \u0432\u043e\u043f\u0440\u043e\u0441\u043e\u043c. \u041d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043b\u0435\u0442 \u043d\u0430\u0437\u0430\u0434 \u043a\u0430\u0444\u0435\u0434\u0440\u044b Computer Science \u043f\u0440\u0438\u0433\u043b\u0430\u0441\u0438\u043b\u0438 \u043c\u0435\u043d\u044f \u0434\u043b\u044f \u043b\u0435\u043a\u0446\u0438\u0439 \u0432 \u0440\u044f\u0434\u0435 \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u043e\u0432. \u041f\u043e\u0447\u0442\u0438 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u043e \u044f \u0441\u043f\u0440\u043e\u0441\u0438\u043b \u0441\u0432\u043e\u044e \u043f\u0435\u0440\u0432\u0443\u044e \u0430\u0443\u0434\u0438\u0442\u043e\u0440\u0438\u044e, 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