Showing posts with label practising. Show all posts
Showing posts with label practising. Show all posts

Day of Docker keynote

It was an honour and a pleasure to open the Day of Docker conference in Oslo with a keynote telling the story of cyber-dojo (so far).



do more deliberate practice

Do More Deliberate Practice is one of my entries in 97 Things Every Programmer Should Know.
cyber-dojo.org is the site I built where teams can practice programming.

Deliberate practice is not simply performing a task. If you ask yourself "Why am I performing this task?" and your answer is "To complete the task," then you're not doing deliberate practice.

You do deliberate practice to improve your ability to perform a task. It's about skill and technique. Deliberate practice means repetition. It means performing the task with the aim of increasing your mastery of one or more aspects of the task. It means repeating the repetition. Slowly, over and over again. Until you achieve your desired level of mastery. You do deliberate practice to master the task not to complete the task.

The principal aim of paid development is to finish a product whereas the principal aim of deliberate practice is to improve your performance. They are not the same. Ask yourself, how much of your time do you spend developing someone else's product? How much developing yourself?

How much deliberate practice does it take to acquire expertise?
  • Peter Norvig writes that "It may be that 10,000 hours [...] is the magic number."
  • In Leading Lean Software Development Mary Poppendieck notes that "It takes elite performers a minimum of 10,000 hours of deliberate focused practice to become experts."
The expertise arrives gradually over time — not all at once in the 10,000th hour! Nevertheless, 10,000 hours is a lot: about 20 hours per week for 10 years. Given this level of commitment you might be worrying that you're just not expert material. You are. Greatness is largely a matter of conscious choice. Your choice. Research over the last two decades has shown the main factor in acquiring expertise is time spent doing deliberate practice. Innate ability is not the main factor.
  • Mary: "There is broad consensus among researchers of expert performance that inborn talent does not account for much more than a threshold; you have to have a minimum amount of natural ability to get started in a sport or profession. After that, the people who excel are the ones who work the hardest."
There is little point deliberately practicing something you are already an expert at. Deliberate practice means practicing something you are not good at.
  • Peter: "The key [to developing expertise] is deliberative practice: not just doing it again and again, but challenging yourself with a task that is just beyond your current ability, trying it, analyzing your performance while and after doing it, and correcting any mistakes."
  • Mary: "Deliberate practice does not mean doing what you are good at; it means challenging yourself, doing what you are not good at. So it's not necessarily fun."
Deliberate practice is about learning. About learning that changes you; learning that changes your behavior. Good luck.


cyber-dojo at Bristol Docker meetup

Here's a video of a short presentation I did (at the inaugural Bristol Docker meetup) explaining cyber-dojo and how it uses Docker. The projection is mostly invisible I'm afraid. The security flaws (such as running the containers as root) have now been fixed.



what is cyber-dojo?

cyber-dojo at Trondheim XP meetup
  • a dojo is a place where martial artists practice martial arts.
  • cyber-dojo is where programmers practice programming!
  • cyber-dojo is not an individual development environment.
  • cyber-dojo is a shared learning environment.
  • in a cyber-dojo you focus on improving rather than finishing.
  • in a cyber-dojo you practice by going slower.

frequently asked questions

Why don't you add auto refactoring?

No. Listen.
Stop trying to go faster; start trying to go slower.
Don't think about finishing; think about improving.
Think about practising as a team.
That's what cyber-dojo is built for.

Why don't you add ...?

No. Listen.
Stop trying to go faster; start trying to go slower.
Don't think about finishing; think about improving.
Think about practising as a team.
That's what cyber-dojo is built for.

cyber-dojo is not an individual development environment
cyber-dojo is a shared practice environment
cyber-dojo is a shared learning environment
cyber-dojo gently provokes; provocation encourages learning