Skip to content
GitLab
Projects Groups Snippets
  • /
  • Help
    • Help
    • Support
    • Community forum
    • Submit feedback
    • Contribute to GitLab
  • Sign in
  • 読 読書メモ:ピープルウエア第3版
  • Project information
    • Project information
    • Activity
    • Labels
    • Members
  • Repository
    • Repository
    • Files
    • Commits
    • Branches
    • Tags
    • Contributors
    • Graph
    • Compare
  • Issues 0
    • Issues 0
    • List
    • Boards
    • Service Desk
    • Milestones
  • Merge requests 0
    • Merge requests 0
  • CI/CD
    • CI/CD
    • Pipelines
    • Jobs
    • Schedules
  • Deployments
    • Deployments
    • Environments
    • Releases
  • Packages and registries
    • Packages and registries
    • Package Registry
    • Container Registry
    • Infrastructure Registry
  • Monitor
    • Monitor
    • Incidents
  • Analytics
    • Analytics
    • Value stream
    • CI/CD
    • Repository
  • Wiki
    • Wiki
  • Snippets
    • Snippets
  • Activity
  • Graph
  • Create a new issue
  • Jobs
  • Commits
  • Issue Boards
Collapse sidebar
  • 藤森咲紅
  • 読書メモ:ピープルウエア第3版
  • Wiki
  • Chapter 10: Mental Labor Hours vs. Physical Labor Hours

Chapter 10: Mental Labor Hours vs. Physical Labor Hours · Changes

Page history
Chapter 10: Mental Labor Hours vs. Physical Labor Hours を更新 authored Aug 21, 2023 by 藤森咲紅's avatar 藤森咲紅
Hide whitespace changes
Inline Side-by-side
Chapter-10:-Mental-Labor-Hours-vs.-Physical-Labor-Hours.md
View page @ ef037655
...@@ -11,7 +11,7 @@ ...@@ -11,7 +11,7 @@
## Chapter 10 Brain work hours versus physical work hours ## Chapter 10 Brain work hours versus physical work hours
Table 10.1 Ratio of working hours by work status _Table 10.1 Ratio of working hours by work status_
|Working status|Ratio| |Working status|Ratio|
|:-:|:-:| |:-:|:-:|
...@@ -20,13 +20,13 @@ Table 10.1 Ratio of working hours by work status ...@@ -20,13 +20,13 @@ Table 10.1 Ratio of working hours by work status
|Work by 3 or more people|20%| |Work by 3 or more people|20%|
- Flow state and productivity - Flow state and productivity
- Percentage of average hours worked per day as surveyed by IBM (Table 10.1) - Percentage of average hours worked per day as surveyed by IBM (Table 10.1)
- Working alone is a minority, but **real work can be done when you are alone**, so you can't ignore it - Working alone is a minority, but **real work can be done when you are alone**, so you can't ignore it
- In a noisy office, it is impossible for a programmer working alone to be in a **flow state** - In a noisy office, it is impossible for a programmer working alone to be in a **flow state**
- Anything that distracts you reduces programmer productivity and significantly increases the cost of your project. - Anything that distracts you reduces programmer productivity and significantly increases the cost of your project.
- e.g. the states in Table 10.2 - e.g. the states in Table 10.2
Table 10.2 Example of work content and work time in programming contest _Table 10.2 Example of work content and work time in programming contest_
|Work time (start to end)|Work content|Cause of work interruption| |Work time (start to end)|Work content|Cause of work interruption|
|:-:|:-:|:--| |:-:|:-:|:--|
...@@ -40,19 +40,19 @@ Table 10.2 Example of work content and work time in programming contest ...@@ -40,19 +40,19 @@ Table 10.2 Example of work content and work time in programming contest
>It doesn't matter how many hours you've sat at your desk, it matters how long you've worked with all your attention. >It doesn't matter how many hours you've sat at your desk, it matters how long you've worked with all your attention.
- How to calculate the time actually spent on software development - How to calculate the time act
- **Record the number of consecutive uninterrupted hours** (mind concentration time) for each person ually spent on software development
- Still record manual hours for payroll - **Record the number of consecutive uninterrupted hours** (mind concentration time) for each person
- Still record manual hours for payroll
- Two Benefits - Two Benefits
- Draws attention to the importance of flow time: people start to take at least a few hours of uninterrupted time for granted - Draws attention to the importance of flow time: people start to take at least a few hours of uninterrupted time for granted
- A true record of time spent on work: It is NG to analyze the accumulated flow time against the flow time required to complete the project on a physical labor time basis. - A true record of time spent on work: It is NG to analyze the accumulated flow time against the flow time required to complete the project on a physical labor time basis.
> E-Factor = Number of hours without interruption ÷ Hours spent sitting at desk
$$
E-Factor = \frac{ \text{ Number of hours without interruption } } { \text{ Hours spent sitting at desk } }
$$
- E factor (environmental factor) - E factor (environmental factor)
- Daily measurement of the E-factor formally acknowledges the idea that programmers need some uninterrupted time. - Daily measurement of the E-factor formally acknowledges the idea that programmers need some uninterrupted time.
- By pushing the E factor to the forefront, we can change the corporate culture in the direction of not interrupting work. - By pushing the E factor to the forefront, we can change the corporate culture in the direction of not interrupting work.
→ A corporate culture of uninterrupted time logging helps programmers have time to do real work → A corporate culture of uninterrupted time logging helps programmers have time to do real work
\ No newline at end of file
Clone repository
  • Break a minute... Intermezzo
  • Chapter 1 Trouble somewhere today
  • Chapter 10: Mental Labor Hours vs. Physical Labor Hours
  • Chapter 11 Phones, Phones, and Phones
  • Chapter 12 Restoration of the Door
  • Chapter 13 Office Environment Evolution Theory
  • Chapter 14 Hornblower factor
  • Chapter 15 Let's talk about leadership
  • Chapter 16 Hiring a Juggler
  • Chapter 17 Getting Along With Others
  • Chapter 18 The End of Childhood
  • Chapter 19 Fun to be here
  • Chapter 1: Something is wrong today
  • Chapter 2 Cheeseburger production and sales manual
  • Chapter 20 Human Assets
View All Pages