Noah Sussman Profile picture
YAML Herder at @unity3d. Web Developer since 1999. Formerly @etsy, @BNBooks, @discovery, @officialSAT, @ninewest, @NYPL. Simplex sigillum veri. 💀 he/him
Ben Klaasen Profile picture 1 added to My Authors
16 Nov 19
#testing concepts thread.
What is deduction?

What is induction?

What are the differences between deductive and inductive investigation of anomalies?
What is an anomaly?

How do anomalous events differ from “normal,” non-anomalous events?
Read 27 tweets
8 Sep 19
I said I would write more about breaking into a dev role so here goes.

One of the things that absolutely destroys entry-level programming applicants is the fear that they won't be able to do "the job" once hired.

This fear is unreasonable and unfounded and I'll tell you why.
First, it is extremely unusual (ime it never happens!) for an entry-level developer to be hired and then placed in charge of some kind of complex high-risk project.

You're going to be the most junior and the most recent hire. You're not going to be in charge of *anything.*
There are just tons of jokes about how programming interviews are like "show on the whiteboard that the Traveling Salesman problem is at least NP Hard" and then after hire it's like "move this button 3px left."

They're funny because THIS IS 100% TRUE.
Read 53 tweets
9 Jun 19
@alanpage It's very telling that manual testing is seen as cheap.

IME this perception exists because (as I have repeatedly seen at clients) the absolute most junior people are hired as testers in order to keep costs down. Because they’re so junior they don’t contribute very much. 1/2
@alanpage 2/3 They stay junior because they have no mentorship (because mentorship is expensive).

The “5x to 15x” cost of automation proposed by the OP fits with this model: median developer pay is around $150k US. A team of five devs then costs ~$750k annually (considering TC only here)
@alanpage 3/4 Glassdoor lists “QA Analyst” roles as starting at $18k US. I’m in NYC so this is lower than I’ve ever seen. Let’s assume QA roles start around $25k, which is just enough to rent a room and live paycheck to paycheck in NYC.

The cheapest QA analyst costs 17% of a dev salary.
Read 33 tweets
15 Apr 19
technical debt is a better metaphor once you know that engineers don’t borrow from technical credit cards but rather from technical loan sharks
technical debt isn’t clean managed debt like business debt. it’s an obligation scrawled illegibly on a cocktail napkin.
the inevitable result of unpaid technical debt is that you and your colleagues get your technical legs broken by the technical equivalent of Tony Soprano.
Read 8 tweets
9 Apr 19
Interaction Resiliency (iXR) is the practice of Software QA (aka #testing) as applied to "devops" or more properly Safety-II software delivery (aka continuous delivery & continuous deployment).
I put a name to "testing in devops" or "agile testing in continuous delivery" because a) those phrases are clumsy 😀 and b) the current discourse in #testing constantly collapses back on itself as big-A Agile + CDT are conflated time-and-time-again with Safety-II + Kaizen #iXR
#iXRE Interaction Resiliency Engineering
Read 37 tweets
24 Nov 18
The place where "testing vs. checking" starts to really leak (as all metaphors do but still…) is the Cartesian division of "things a human does" and "things a computer does."

First, Safety-II and therefore #devops, explicitly reject the Cartesian view of complex systems.
For instance the idea that there exists a computer activity called "checking" and what "checking" does is it validates assumptions.

There is a problem right there. Validation assumes some kind of goal-oriented behavior — telos — which computers do not on their own, have.
As covered pragmatically in the classic paper "The Ironies Of Automation" and further explored by Donna Haraway: computers on their own are not capable of "validation" because validation implies an understanding of some set of moral *values.*

But computers can't do that.
Read 36 tweets