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16 Nov 08

Hacker News | Five whys: The startup immune system, Part 1

news.ycombinator.com/item - Preview

startup habit culture

15 Nov 08

Five whys: The startup immune system, Part 1 - Venture Hacks

venturehacks.com/...five-whys - Preview

entrepreneur habit culture

Summary: Whenever you find a defect, ask why five times to discover the root cause of the problem. Then make corrections at every level of the analysis. By applying five whys whenever you find a defect, you will (1) uncover the human problems beneath technical problems and (2) build an immune system for your startup.
When something goes wrong, we tend to see it as a crisis and seek to blame. A better way is to see it as a learning opportunity. Not in the existential sense of general self-improvement. Instead, we can use the technique of asking why five times to get to the root cause of the problem and make corrections.
5 more annotations...
- Why was the website down? The CPU utilization on all our front-end servers went to 100%.
  Why did the CPU usage spike? A new bit of code contained an infinite loop!
  Why did that code get written? So-and-so made a mistake.
  Why did his mistake get checked in? He didn’t write a unit test for the feature.
  Why didn’t he write a unit test? He’s a new employee, and he was not properly trained in Test Driven Development (TDD).
- Bring the site back up.
  Remove the bad code.
  Help so-and-so understand why his code doesn’t work as written.
  Train so-and-so in the principles of TDD.
  Change the new engineer orientation to include TDD.
- Making corrections builds your startup immune system.
- 5 whys uncovers the human problems beneath technology problems.
- Make your corrections proportional to the cost of the defect.

11 Jul 08

LtU Classic Archives

lambda-the-ultimate.org/...message7628.html - Preview

programmer habit

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