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エンジニア目線の「良い失敗」について
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Ibuki KAWAMITSU
November 14, 2020
Programming
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エンジニア目線の「良い失敗」について
Ibuki KAWAMITSU
November 14, 2020
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Transcript
ΤϯδχΞઢͷʮྑ͍ࣦഊʯʹ͍ͭͯ
ԭೄੜ·Ε ླྀٿେֶେֶӃཧֶݚڀՊใֶઐ߈ म࢜࣍ $0%&#"4& ϓϩάϥϛϯάεΫʔϧߨࢣظੜ גࣜձࣾ&#*-"#ΤϯδχΞ ຬาو ͔ΘΈͭ ͍Ϳ͖ !QVSFNPSV
ΤϯδχΞઢͷʮྑ͍ࣦഊʯʹ͍ͭͯ
͜Μͳ͜ͱݴΘΕͨ͜ͱ ͋Γ·͔͢ʁ
ͨ͘͞Μࣦഊ͠Α͏
Ͱਖ਼…
ࣦഊڪ͍ʂ
ग़དྷΔͳΒࣦഊͨ͘͠ͳ͍ʂ
ͦΕͰΈΜͳΑ͘ʮࣦഊ͠ Α͏ʯͱݴ͏ΑͶ
ͳ͔ͥ
ࣗͷʮࣦഊʯͷೝࣝ ࣦഊ͠Ζͱ͍͏ਓͷʮࣦഊʯͷೝࣝ
ࣗͷࣦഊͷೝࣝ ͱʹ͔͘Ͱ͔ͬ͘Β͔͢ Πϝʔδ͕͋Δ
ଞͷਓͷݴ͏ࣦഊ খࣦ͘͞ഊ͢Δ͜ͱ ͳΜ͡Όͳ͍͔
খࣦ͘͞ഊ͢Δ ↓ ֬ೝͯͦ͠ͷ࣌ʑͷೝࣝͷ ζϨΛमਖ਼͢Δ
খ͞ͳࣦഊ = ֬ೝ + վળ • ͜͜Ͱͷʮࣦഊʯখ֬͘͞ೝͯ͠मਖ਼͢Δ͜ͱ • վળ͢Δ͜ͱͱجຊతʹηοτ •
ཻ͕ͦ͜·Ͱେ͖͘ͳ͍ɺμϝʔδൺֱతখ͞ ͍ • ͦͷ࣌ͷΠγϡʔΛࣗͳΓʹཧղ͢Δඞཁ͕͋Δ→ Կ͕ϦεΫ͔ΛஅͰ͖ͳ͍
ྑ͍ࣦഊ ↓ ਖ਼͘͠ԾઆΛཱͯ,ͦΕΛඞཁ ࠷খݶͷཻͰ֬ೝ, վળ
͡Ό͋ΤϯδχΞઢͷྑ͍ ࣦഊͬͯʁ
ΤϯδχΞʹͱͬͯͷྑ͍ࣦഊ • ԾઆΛཱͯΔ • ࣮ߦ͢Δ • ඞཁ࠷খݶͷཻͰ֬ೝ͢Δ • ԾઆͱͷࠩΛ֬ೝͯ͠ɺվળ͢Δ
ΤϯδχΞʹͱͬͯͷྑ͍ࣦഊ • ԾઆΛཱͯΔ • ࣮ߦ͢Δ • ඞཁ࠷খݶͷཻͰ֬ೝ͢Δ • ԾઆͱͷࠩΛ֬ೝͯ͠ɺվળ͢Δ
ԾઆΛཱͯΔ෦͕ಛʹॏཁ • ͳΜͷతͰऔΓΉͷ͔ • ۓٸੑʁ • ॏཁͷߴ͍มͳʹ͔ (࣭, , νʔϜͷೝࣝҰக,
ͳͲͳͲ) • αϒλεΫʹΓ͚ (ඞཁʹԠͯ֬͜͜͡ೝ͢Δ) • Ͳ͕͜؊͔ • ϦεΫ͕͋Δͱͨ͠ΒͲ͔͜, ͦͷରࡦ
͜ͷαΠΫϧΛଟ࣮͘ߦͯ͠ ͍͘͜ͱ
ཻখ͘͞ɺ࣮ߦଟ͘ɺ ͘
ͨͩ͜ΕϨϏϡʔΞʔଆͷ ࢹͰݟΔͱ͔ͳΓେม
ϨϏϡʔΞʔଆͷࢹ • ֬ೝͯ͠அ͢ΔͨΊʹɺ࣮ߦͨ͠ਓ͕Ͳ͏͍͏ࢥߟաఔͰ ͦ͏ͨ͠ͷ͔͔ΔͱɺΑΓ౿ΈࠐΜͩϨϏϡʔ͕ग़དྷΔ • ٯʹཻ͕ߴ͍֬ೝΛٻΊΒΕΔͱɺͦͷࢥߟաఔ૬खͷ ೝࣝΛϨϏϡʔΞʔଆ͕֬ೝ͢Δ࡞ۀ͕ൃੜ͢Δ ϨϏϡʔΞʔͷ֬ೝίετ࠷খݶʹɺϨϏϡʔΞʔ͔ΒҾ͖ ग़͢ϨϏϡʔΛΑΓ࣭ͷߴ͍ͷʹ͢ΔΑ͏ʹ৺͕͚Δͱྑ͞ ͦ͏
ΤϯδχΞͷΒίʔυΛ ॻ͘͜ͱ͕Ͱ͖ɺ༷ʑͳ πʔϧΛѻ͑Δʂ
͜ΕΒΛͬͯ֬ೝͷͨΊͷ Ξτϓοτͷ۩ମੑΛ ߴΊΔ
None
·ͱΊ • ྑ͍ࣦഊ = খࣦ͘͞ഊ = ਖ਼͘͠ԾઆΛཱͯͯਵ࣌֬ೝ, վળ͢Δ͜ͱ • ΤϯδχΞ։ൃΛ͢͢ΊΔ্ͰɺԿ͕తͰͦͷͨΊ
ʹͲ͏͢Δ͜ͱ͕ॏཁͳͷ͔Λߟ͑ͯԾઆཱͯΔ • ϨϏϡʔΞʔଆͷ֬ೝ͢ΔίετΛ࠷খʹɺҾ͖ग़͢ ใͷ࣭ΛΑΓྑ͘͢ΔͨΊʹɺ֬ೝͷͨΊͷΞτϓο τΛίʔυπʔϧΛͬͯ۩ମੑΛߴΊͯґཔ͢Δ