SimpleとEasyは違う / Simple is not Easy

ኍ੉݈ʢגࣜձࣾΫϥγίϜʣ -BSBWFM+1$POGFSFODF 4JNQMFͱ&BTZ͸ҧ͏

೥ɺѪ஌ݝੜ·Εɻ೥݄ɺגࣜձࣾΫϥγίϜʹೖࣾɻ લ৬·Ͱ͸3VCZPO3BJMTͰͷΞϓϦέʔγϣϯ։ൃɺσβΠϯ૊৫ ͷ্ཱͪ͛ͳͲʹܞΘΔɻݱࡏ͸-BSBWFMͰͷΞϓϦέʔγϣϯ։ൃɺ ։ൃɾӡ༻؀ڥͷ੔උɺσβΠφʔ࠾༻ͳͲʹऔΓ૊Ήɻ ኍ੉݈5BLFSV)JSPTF!UBLFSV

IUUQTOPUFNV[email protected]OOBC

IUUQTTQFBLFSEFDLDPNUBLFSVLVSBTJLPNVUPMBSBWFMUPEEE

w &$ ϝσΟΞͷΑ͏ͳαΠτ w ݄ؒ17໿ ສ w ݄ؒ66໿ສ w ࣾ಺Ͱ։ൃɾӡ༻
w -BSBWFM8PSE1SFTT7VFKT ΫϥγίϜʮ๺Ԥɺ฻Β͠ͷಓ۩ళʯΛӡӦ IPLVPILVSBTIJDPN

࠷ۙ͋ͬͨ͜ͱ

࠷ۙ͋ͬͨ͜ͱᶃ   -BSBWFM.JY

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#BCFMͷQSFTFUTΛมߋ͍ͨ͠ ˠ#BCFM͔ͩΒNJYCBCFM$POpH ͔ͳʁ ˠ͏·͍͔͘ͳ͍ ࠷ۙ͋ͬͨ͜ͱᶃ-BSBWFM.JY

ˠ-BSBWFM.JYͷιʔεಡΉ ˠQSFTFUT͸্ॻ͖Ͱ͖ͳ͍ W ˠNJYXFCQBDL$POpH Λ࢖ͬͯղܾ ࠷ۙ͋ͬͨ͜ͱᶃ-BSBWFM.JY

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ˠ͓͔͛ͰXFCQBDLʹؔ͢Δཧղ΋ਐΜͩ ࠷ۙ͋ͬͨ͜ͱᶃ-BSBWFM.JY

࠷ۙ͋ͬͨ͜ͱᶃ-BSBWFM.JY ʢϥούʔͱ͸ʣ

࠷ۙ͋ͬͨ͜ͱᶄ   7VF 7VFY

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ͯ͘͠Ε·͢ɻz  IUUQTKQWVFKTPSHWHVJEFGPSNTIUNM ࠷ۙ͋ͬͨ͜ͱᶄ7VF 7VFY

εςʔτ؅ཧʹ7VFYΛಋೖ͠Α͏  ʢ7VFͷެࣜϥΠϒϥϦͩ͠ʣ ˠυΩϡϝϯτΛಡΉ ࠷ۙ͋ͬͨ͜ͱᶄ7VF 7VFY

lݫ֨ϞʔυͰ7VFYΛ࢖༻͢Δͱ͖ɺ7VFYʹ ଐ͢Δঢ়ଶͷҰ෦ͰWNPEFMΛ࢖༻͢Δͷ͸ গ͠τϦοΩʔͰ͢z  IUUQTWVFYWVFKTPSHKBHVJEFGPSNTIUNM ࠷ۙ͋ͬͨ͜ͱᶄ7VF 7VFY

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࠷ۙ͋ͬͨ͜ͱᶄ7VF 7VFY ʢຐ๏͸Ͳ͜ʹ͍ͬͨʣ

࠷ۙ͋ͬͨ͜ͱᶅ   ޙഐ͔Βͷ࣭໰

ޙഐʢΤϯδχΞ̍೥໨ʣ  ʮઌഐɺ%PDLFSͰ.Z42-ͷίϯςφ͕  ಈ͔ͳ͘ͳͬͨΜͰ͚͢Ͳʜʯ ࠷ۙ͋ͬͨ͜ͱᶅޙഐ͔Βͷ࣭໰

ʢ%PDLFSษڧ࢝͠Ίͨͷ͔ͳ☺ʣ ࠷ۙ͋ͬͨ͜ͱᶅޙഐ͔Βͷ࣭໰

๻  ʮͱΓ͋͑ͣ.Z42-ͷϘϦϡʔϜ࡟আͯ͠ɺ ΍Γ௚ͯ͠ΈΑ͏͔ʯ ࠷ۙ͋ͬͨ͜ͱᶅޙഐ͔Βͷ࣭໰

ޙഐʮϘϦϡʔϜʁʯ ࠷ۙ͋ͬͨ͜ͱᶅޙഐ͔Βͷ࣭໰

๻ʮʁʯ ࠷ۙ͋ͬͨ͜ͱᶅޙഐ͔Βͷ࣭໰

๻ʮͲ͏΍ͬͯ%PDLFSಈ͔ͨ͠ͷʁʯ ࠷ۙ͋ͬͨ͜ͱᶅޙഐ͔Βͷ࣭໰

ޙഐʮWFTTFMTUBSUʯ ࠷ۙ͋ͬͨ͜ͱᶅޙഐ͔Βͷ࣭໰

๻ʮʁʯ ࠷ۙ͋ͬͨ͜ͱᶅޙഐ͔Βͷ࣭໰

ʢ%PDLFSษڧ࢝͠Ίͨͷ͔ͳ☺ʣ ࠷ۙ͋ͬͨ͜ͱᶅޙഐ͔Βͷ࣭໰

7FTTFM  l4JNQMF%PDLFSEFWFMPQNFOU FOWJSPONFOUTGPS-BSBWFMz -BSBWFMΛ%PDLFSͰಈ͔͢  ศརπʔϧʢΒ͍͠ʣ ࠷ۙ͋ͬͨ͜ͱᶅޙഐ͔Βͷ࣭໰ IUUQTWFTTFMTIJQQJOHEPDLFSDPN

࠷ۙ͋ͬͨ͜ͱᶅޙഐ͔Βͷ࣭໰ ʢ%PDLFSษڧͯ͠ʣ

͜Ε͸Կͷ࿩ʁ

؆୯ʹ࢖͑Δ˰γϯϓϧʁ গͳ͍هड़PSίϚϯυͰ  αΫοͱಈ͔ͤΔʂ ؆୯ʂ γϯϓϧʂ

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ʢެࣜϥΠϒϥϦͰ͋ͬͯ΋ʣ ͱΓ͋͑ͣಈ͔ͤΔ☺ ໰୊͕ى͖ΔͱղܾͰ͖ͳ͍  ʢ݁ہ%PDLFSͷ஌͕ࣝඞཁʣ

ʮ؆୯ʹ࢖͑Δʯ΋ͷ͕ʮγϯϓϧʯͩͱ͸ݶΒͳ͍

lγϯϓϧ͞ͱ͸࢖͍΍͍͢͜ͱͩͱ  ࢥ͍ͬͯΔͷͳΒͦΕ͸ؒҧ͍ͬͯ·͢ɻz l͜ΕΒ͸શ͘΋ͬͯҧ͏΋ͷͰ͢ɻ  &BTZͱ4JNQMF͸ҧ͍·͢ɻz 4JNQMF.BEF&BTZ 3JDI)JDLFZ

&BTZ w ૬ରతɾओ؍తʢਓʹΑͬͯҧ͏ʣ w ରٛޠɿIBSE 4JNQMF w ٬؍తͳ֓೦ʢ؍ଌͰ͖Δࣄ࣮ʣ w ରٛޠɿDPNQMFY
3JDI)JDLFZ

গͳ͍هड़PSίϚϯυͰ  αΫοͱಈ͔ͤΔʂ ؆୯ʂ γϯϓϧʂ &BTZͱ4JNQMFΛࠞಉͯ͠͸ͳΒͳ͍

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"OFMFHBOUXSBQQFSBSPVOE8FCQBDLGPSUIFVTFDBTF ͋ͳͨ͸7VFΛ࢝ΊΔʹ͋ͨͬͯ  +49ɺ&4΍ϏϧυγεςϜʹ͍ͭͯ஌Δඞཁ͸ͳ͍ 5IJTHPBMPGUIJTQSPKFDUJTUPCFBTTJNQMFBTQPTTJCMF  XIJMFBMTPHJWJOHQFPQMFBHMJNQTFJOUPIPX%PDLFSXPSLT 4JNQMFΑΓ&BTZΛ໨తͱ͍ͯ͠Δʢͷ͔΋ʣ 7VF 7VFY 7FTTFM -BSBWFM.JY
Ͱ͸ͳ͘ͳͬͨͱ͍͏͜ͱ͔ʂ

&BTZʢ؆୯ʣͱ͍͑͹ɺ

૑ຯͷͭΏ͸&BTZʢ؆୯ʣ ͍Ζ͍Ζ࡞ΕΔʢҰ෦ʣ ਫPS͓౬Ͱرऍ͢Δ͚ͩ

૑ຯͷͭΏ͸$PNQMFYʢෳࡶʣ lʮ૑ຯͷͭΏʯΛՃ͑Δ͚ͩͰɺ͍ͭ΋ͷϝχϡʔ΋ϓϩͷຯz

w ͜Ε࢖͏ͱ͍͍ͩͨͲΕ΋  ࣅͨΑ͏ͳຯʹͳΔ w ௐຯྉͷ૊Έ߹Θͤఔ͸  ԿͰ΋࡞ΕΔΘ͚Ͱ͸ͳ͍ ૑ຯͷͭΏ w ໘౗ͳܭྔɾௐຯ͸ෆཁ w
͜ΕҰͭͰ͍Ζ͍Ζ࡞ΕΔ

w ͜Ε࢖͏ͱ͍͍ͩͨͲΕ΋  ࣅͨΑ͏ͳຯʹͳΔ w ௐຯྉͷ૊Έ߹Θͤఔ͸  ԿͰ΋࡞ΕΔΘ͚Ͱ͸ͳ͍ w ໘౗ͳܭྔɾௐຯ͸ෆཁ w ͜ΕҰͭͰ͍Ζ͍Ζ࡞ΕΔ
૑ຯͷͭΏ ൚༻ੑɾ֦ுੑ͕௿͍ ಋೖίετ͕௿͍☺

ͩ͠ ͠ΐ͏ΏBOENPSF w ׳ΕΔ͜ͱ͕Ͱ͖Ε͹  ͦ͜·Ͱखؒɾ໘౗Ͱ͸ͳ͍ w ૊Έ߹Θͤɾ෼ྔ࣍ୈͰ  ༷ʑͳຯ͕࡞ΕΔ w Ұ௨Γἧ͑Δඞཁ͕͋Δ
w ख͕͔͔ؒΔɾ໘౗

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ͩ͠ ͠ΐ͏ΏBOENPSF ൚༻ੑɾ֦ுੑ͕ߴ͍☺ ಋೖίετ͕ߴ͍

&BTZ͸τϨʔυΦϑʢͰ͋Δ͜ͱ͕ଟ͍ʣ &BTZ$PNQMFY )BSE4JNQMF ಋೖίετ˚  ൚༻ੑɾ֦ுੑ˕ ಋೖίετ˕  ൚༻ੑɾ֦ுੑ˚

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l୯७ੑͱ͍͏඼࣭͸ɺ͍ͬͨΜࣦΘΕͯ  ͠·͏ͱऔΓ໭͢͜ͱ͕͖ΘΊͯ೉͍͠ͱ͍͏ ͜ͱͰ͢ɻz 43&αΠτϦϥΠΞϏϦςΟΤϯδχΞϦϯά

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ࠓ೔͔Β͸͡ΊΔ4JNQMJpDBUJPO

ࠓ೔͔Β͸͡ΊΔ4JNQMJpDBUJPO†   ෆཁͳ΋ͷ͸ফ͢

†ෆཁͳ΋ͷ͸ফ͢ ෳࡶͳ΋ͷΛҡ࣋͠Α͏ͱ͢Ε͹͞ΒʹෳࡶʹͳΓଓ͚Δ ػೳͷվળɾ֦ு ϓϩϏδϣχϯά  εέʔϦϯά ຊ൪ͱ։ൃ؀ڥͷҰக

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ࠓ೔͔Β͸͡ΊΔ4JNQMJpDBUJPOᶃ   Ӆṭ͠ͳ͍

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ᶃӅṭ͠ͳ͍

ʜΛ࣮ߦ͢ΔεΫϦϓτʁ ฒྻ࣮ߦʹඞཁͳ͜ͱ ᶃӅṭ͠ͳ͍ ׂΓ౰ͯΒΕͨςετϑΝΠϧΛऔಘ  DJSDMFDJUFTUTTQMJU ϑΝΠϧϦετ͔Β  QIQVOJUQBSUJBMYNMΛੜ੒ ੜ੒ͨ͠QIQVOJUQBSUJBMYNMΛ  ༻͍ͯQIQVOJUΛ࣮ߦ SVOQIQVOJUQBSUJBMTI
&BTZ☺

ฒྻ࣮ߦʹඞཁͳ͜ͱ ᶃӅṭ͠ͳ͍ ׂΓ౰ͯΒΕͨςετϑΝΠϧΛऔಘ  DJSDMFDJUFTUTTQMJU ϑΝΠϧϦετ͔Β  QIQVOJUQBSUJBMYNMΛੜ੒ ੜ੒ͨ͠QIQVOJUQBSUJBMYNMΛ  ༻͍ͯQIQVOJUΛ࣮ߦ SVOQIQVOJUQBSUJBMTI ϩʔΧϧͰ 
࣮ߦ͢Δͱ͖͸ʁ ʜΛ࣮ߦ͢ΔεΫϦϓτʁ QIQVOJUͷΦϓγϣϯ͸  Ͳ͏౉͢ʁ ϝϯςͰ͖Δʁ

lந৅Խͱ͸Ӆณ͢Δ͜ͱͰ͸͋Γ·ͤΜɻ  Ӆณ͸Կͷ໾ʹ΋ཱͪ·ͤΜɻz 4JNQMF.BEF&BTZ 3JDI)JDLFZ

ᶃӅṭ͠ͳ͍ ʢͲ͏͢Δ΂͖͔ʜʣ

9.-Λੜ੒͢Δ͚ͩ ฒྻ࣮ߦʹඞཁͳ͜ͱ ᶃӅṭ͠ͳ͍ ׂΓ౰ͯΒΕͨςετϑΝΠϧΛऔಘ  DJSDMFDJUFTUTTQMJU ϑΝΠϧϦετ͔Β  QIQVOJUQBSUJBMYNMΛੜ੒ ੜ੒ͨ͠QIQVOJUQBSUJBMYNMΛ  ༻͍ͯQIQVOJUΛ࣮ߦ QIQVOJUYNMHFOQIQ
4JNQMF☺

ᶃӅṭ͠ͳ͍

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ᶃӅṭ͠ͳ͍ $JSDMF$*Ͱ1)16OJUΛฒྻ࣮ߦ͢Δ

ࠓ೔͔Β͸͡ΊΔ4JNQMJpDBUJPOᶄ   ·ͱΊͳ͍

ᶄ·ͱΊͳ͍ "QQ Ћ MVNFONPEVMFT "QQ Ќ "QQ Ѝ ֤ΞϓϦέʔγϣϯʹڞ௨͢ΔॲཧΛ·ͱΊͨಠࣗϥΠϒϥϦ ˞໊લ͸ྺ࢙తܦҢʹΑΔ
%3:Ͱ&BTZ☺ $PNQPTFSͰJOTUBMM

ᶄ·ͱΊͳ͍ ͖Ε͍ʹڞ௨͢Δ෦෼͚ͩΛ੾Γग़͍ͤͯΔΘ͚Ͱ͸ͳ͔ͬͨ Ϋϥεͷґଘؔ܎ͷ͍ͤͰ  ڞ௨Ͱ͸ͳ͍ॲཧ΋ؚΉ͜ͱʹ MVNFONPEVMFTͱ͍͏໊લ͕ Α͘ͳ͔ͬͨͷ͔΋͠Εͳ͍

ᶄ·ͱΊͳ͍ ؾ͕͚ͭ͹։ൃͷ଍ΛҾͬுΔଘࡏʹʜ ଞʹ͸ؔ܎ͷͳ͍มߋͳͷʹ  ͢΂ͯͷ"QQͰDPNQPTFSVQEBUF ʜͱࢥ͍ͬͯͨΒɺଞͷ"QQͰ Կނ͔ςετ͕མͪΔ

lαʔϏεؒͷ݁߹͕ଟ͗͢Δ͜ͱʹΑΔ֐͸ɺ ίʔυͷॏෳ͕Ҿ͖ى͜͢໰୊ΑΓ΋͸Δ͔ʹ ѱ͘ͳΓ·͢ɻz ϚΠΫϩαʔϏεΞʔΩςΫνϟ

ᶄ·ͱΊͳ͍ ʢͲ͏͢Δ΂͖͔ʜʣ

ᶄ·ͱΊͳ͍ ղମ͠Α͏

ᶄ·ͱΊͳ͍ "QQ Ћ MVNFONPEVMFTˠղମ "QQ Ќ "QQ Ѝ ֤ΞϓϦέʔγϣϯʹඞཁͳॲཧΛҠಈʢίʔυͷॏෳ͕͋ͬͨͱͯ͠΋ʂʣ

ᶄ·ͱΊͳ͍ "QQ Ћ MVNFONPEVMFT  ˠIPLVPILVSBTIJEC "QQ Ќ "QQ Ѝ Ͳ͏ͯ͠΋ڞ௨ͤ͞ͳ͚Ε͹ͳΒͳ͍෦෼
NJHSBUJPOTTFFET ͚ͩΛ࢒͢ ໊લ΋ม͑ͨ 4JNQMF☺

ᶄ·ͱΊͳ͍ IPLVPILVSBTIJEC  NJHSBUJPOTTFFET มߋ͢Δͱ͖͸$*Ͱ͢΂ͯͷΞϓϦέʔγϣϯͷςετΛ࣮ߦ "QQ Ћ "QQ Ќ "QQ Ѝ

ࠓ೔͔Β͸͡ΊΔ4JNQMJpDBUJPOᶅ   ࡞Γ͗͢ͳ͍

ᶅ࡞Γ͗͢ͳ͍ ࿈ܞ͢Δෳ਺ΞϓϦέʔγϣϯɾϛυϧ΢ΣΞʢ˞ϚΠΫϩαʔϏεͰ͸ͳ͍ʣ "QQ Ћ "QQ Ќ "QQ Ѝ

ᶅ࡞Γ͗͢ͳ͍ ։ൃ؀ڥͷߏங͕ͱͯ΋ϝϯυΫαΠʢೖࣾ࣌ͷ࠷ॳͷนʣ "QQ Ћ "QQ Ќ "QQ Ѝ

IPLVPVLVSBTIJEFWFOW w ͨͩͷEPDLFSDPNQPTFZNM w %PDLFSpMFͱ͔ w ͢΂ͯͷΞϓϦέʔγϣϯͱ  ඞཁͳϛυϧ΢ΣΞΛಉ࣌ʹ  ্ཱͪ͛ͯ͘ΕΔ ᶅ࡞Γ͗͢ͳ͍

ಉ྅  ʮ֤ΞϓϦέʔγϣϯͷηοτΞοϓ΋  ΊΜͲ͍͔͘͞Βɺ.BLFpMFతͳ΋ͷ΋  ༻ҙ͠Α͏ͥʂʯ ᶅ࡞Γ͗͢ͳ͍

ʢ֤ΞϓϦέʔγϣϯͷηοτΞοϓखॱ͕  มΘΔͨͼʹϝϯς͠ͳ͖Ό͍͚ͳ͍Αʣ ʢηοτΞοϓʹ΋ෳ਺ͷέʔε͕͋Δ͚Ͳɺ ͦΕ΋ͦͷεΫϦϓτͰରԠ͢Δͷʁʣ ᶅ࡞Γ͗͢ͳ͍

ʢ͜ͷؾ࣋ͪɺͲ͏͢Ε͹఻ΘΔ͔ʜʣ ᶅ࡞Γ͗͢ͳ͍

ʢԿ͔Λෳࡶʹ͢Δ͜ͱΛද͢ݴ༿ͱͯ͠ʣ lʮʓʓΛίϯϓϨΫτ͢Δʯͱ͍͏  ศརͳݴ༿͕͋Γ·͢ɻz 4JNQMF.BEF&BTZ 3JDI)JDLFZ

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๻ʮͦΕɹɹɹʯ ᶅ࡞Γ͗͢ͳ͍

ಉ྅ʮʁʯ ᶅ࡞Γ͗͢ͳ͍

3&"%.&NE ໿ จࣈ w εΫϦϓτΑΓ͸ϝϯς͕༰қ w ηοτΞοϓखॱ͕Ӆṭ͞Εͳ͍ ᶅ࡞Γ͗͢ͳ͍ ͦ΋ͦ΋ηοτΞοϓखॱ͕
ෳࡶͰ͋Δ͜ͱͷํ͕໰୊ͩ

·ͱΊ

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w ᶃӅṭ͠ͳ͍ w ᶄ·ͱΊͳ͍ w ᶅ࡞Γ͗͢ͳ͍ ·ͱΊ

࡞͍ͬͯΔ΋ͷ͸೔ʑมԽ͢Δ ୹ฤυϥϚͷ੡࡞Λ։࢝ &$ͩͱࢥ͍ͬͯͨΒʜ

XFCQBDL΁ͷҠߦΛݕ౼த ͱΓ͋͑ͣWNPEFMېࢭ  ʢ͋·Γղܾʹͳ͍ͬͯͳ͍ʣ %PDLFSษڧͯ͠ ऴΘΒͳ͍4JNQMJpDBUJPOͷಓ 7VF 7VFY 7FTTFM -BSBWFM.JY

l͋ͳͨ͸ɺ  ͋ͳ͕ͨબΜͩ΋ͷͰͰ͖͍ͯΔz ೔࢈.0$0ͷ$.

l͋ͳͨ͋ͳ͕ͨ࡞ͬͨ΋ͷ͸ɺ  ͋ͳ͕ͨબΜͩ΋ͷͰͰ͖͍ͯΔz

͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠

SimpleとEasyは違う / Simple is not Easy

SimpleとEasyは違う / Simple is not Easy

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