April 2015
Beginner to intermediate
296 pages
6h 18m
Japanese
Content preview from リーン顧客開発 ―「売れないリスク」を極小化する技術
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117
117
5.8 脱線は生じる
• 「なぜ CPU の使用率が急上昇したのか？」→新しく追加したコードに
無限ループが含まれていた！
• 「なぜそのコードが書かれたのか？」→ある従業員がミスを犯したため。
• 「なぜ彼のミスだとわかるのか？」→彼は当該機能の単体テストを書い
ていなかった。
• 「なぜ彼は単体テストを書かなかったのか？」→彼は新入社員で、テスト
駆動開発の適切な訓練を受けていなかった
†
。
最初の「なぜ」から推測できる原因は、ハードウェアの問題のように思え
ます。3 回目の「なぜ」では、原因はエンジニアのせいだと思えます。しか
し 5 回目の「なぜ」によって、問題の再発を防ぐ根治療法とは、従業員が
入社するときの研修訓練の欠陥を直すことが必要だと、初めて明らかになり
ました。
5.8
脱線は生じる
インタビューにはオープンエンドな性質があるので、インタビュー相手が一見無関
係な問題や状況について長々と話を始めてしまうことも起こります。あなたは「なぜ
相手はわたしが話をして欲しいことから脱線して、こんな話をするのだろう？」と疑
問に思うでしょう。
その疑問はよく考えてみる価値があります。なぜこの人は無関係に思える話をして
いるのでしょうか？
相手が何かの話題を出すかぎり、その話題は相手にとって重要
なことなのです。それこそ、あなたが解決しようとしている課題にも増して差し迫っ
た課題なのかもしれません。相手があなたのアイデアについて考える前に、検討して
おかなければならない前提条件であるかもしれません。もしくは、その相手は単にイ ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.