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But seriously, here are a number of ways in which mastering Scrum is difficult ...

1/5
Creating a good backlog is difficult to master (DTM), especially since it's best to backlog problems, not solutions or stories.

Sprint Planning is DTM because it works best as a collaborative meeting, not a PO tells team what to do meeting.

2/5
Dev Team is DTM because there are strong forces militating against true cross-functional teams.

Development in Sprints is difficult to master. I hope that's bloody obvious.

3/5
Sprint Review is DTM because it's hard to get stakeholders even to show up. It's DTM because it's hard to learn to manage by the Increment not by the schedule.

Sprint Retrospective is DTM because so many of the problems are beyond the reach of the team.

4/5
The PO role is DTM because maximizing ROI by raising problems is quite difficult.

SM role is difficult to master because it requires skills not provided in class, and connections within the organization that the nascent SM rarely has.

I could go on ...

5/5
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Ron Jeffries
@RonJeffries
I'm writing a thing about what it feels like to do TDD, in a kind of response to the articles and remarks by @jcoplien and @dhh and others. I agree, of course, that 100% line coverage, which you get for free with TDD, doesn't mean much in a theoretical sense.

1/6
Even 100% branch coverage doesn't mean much. While I don't subscribe to all the math in Cope's article, it's true that, theoretically, a program with high coverage can include plenty of errors.

What's interesting is that in practice, theory doesn't quite work.

2/6
If you TDD some little thing, making sure that every line of code you write is required by a meaningful test, and get it working, try this experiment.

Look at the code. Try to find places where a change to one or more lines will break the program but not break the tests.

3/6
Read 6 tweets
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Ron Jeffries
@RonJeffries
Well, I was going to write about "Doing it wrong" today, but it turns out that I already have. This article isn't quite what I'd say today but it's close:

ronjeffries.com/articles/019-0…

1/12
What would I say today that's different? Well, I'd clarify that there are at least three main ways that a TDD that doesn't work could differ from one that does:

- different design style.
- different problem: "TDD doesn't work here"
- different thing: "not TDD"

2/12
TDD favors a design style that leads to lots of very small, encapsulated items: classes, methods, functions.

If your preferred design style doesn't lean that way, you'll likely find TDD to be of less value.

3/12
Read 12 tweets
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Ron Jeffries
@RonJeffries
TDD works for some people, not for others. The people it works for often (nearly always?) find it useful in some forms of development and less so in others.

To some degree, the second sentence may explain the first: some may be applying it where it doesn't work well for anyone.
Further, TDD works best with very highly-factored designs, which provide lots of little things that can benefit from testing, and where TDD's forces suggest ways of doing that factoring.

That synergy, or its lack, may explain why some don't find TDD useful.
Furthermore, everyone I know who finds it useful came to that finding slowly. They practiced a lot, thoughtfully.

Possibly, probably, mindful practice makes a difference: it usually does.

This, too, may explain why some don't find TDD useful.
Read 9 tweets

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Pst. Gbenro
@gbenro
Good morning o, about to go play FIFA 20 with my Son but let's share a little before I go okay?
For the believer 2 of the most important decisions you have to make are:

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Justin Warren ⬡
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Here begins a thread on my complaint about how DHS handles #FOI requests that I made way back in March 2017. #tljr
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Patrick McKenzie
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A person on Twitter, paraphrased: "I wish I was able to write as well X but despite going to school and doing everything right, I can't."

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"But they'll be not particularly great words."

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Aaron Reichlin-Melnick
@ReichlinMelnick
Good morning all! I'll be watching this hearing over the next couple hours. I'm tuning in now, during @RepJerryNadler's opening statement.

This is the second of several oversight hearings in the new Congress on family separation, something that is desperately needed. Stay tuned!
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Benjamin Wittes
@benjaminwittes
A few thoughts on this, assuming all the facts in this story are accurate (as they are based on comments from the president's lawyers, that is not a given):
(1) A show of strength on the part of the White House would be to release the answers publicly. If that happens, and I don't expect it to happen, that would be a real sign that the president's lawyers see no exposure on the Russia side of this investigation.
(2) It is significant that, at least according to this story, they appear to be answering questions only on the Russia side, not the obstruction side. If that's correct, it leaves Mueller with an interesting choice on obstruction: whether to pursue answers further or not.
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Yemen Peace Project
@YemenPeaceNews
If Houthis didn't try to shamelessly capitalize on every tragedy the coalition inflicts, it would be a lot easier to get the world/the west to take these crimes seriously. Here are some of the ways the Houthis' exploitation of civilian casualties harms the Yemeni people:
When you turn dead children into propaganda, you put the reality of their deaths up for debate. Houthis have no credibility, therefore these victims lose credibility. You rob their deaths of the recognition they are due by associating them with you.
This kind of propaganda makes it possible for the coalition to say that civcas reports are false, and possible for policymakers in the US and UK to believe the coalition (or at least pretend to).
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