!rant
400 Nerf bullets just arrived... Office is gonna become a war zone...

1. Being the only single wringable neck to keep 40+ websites afloat, plus 3-5 new ones coming in or being built each month all with an overseas team that uses Google Translate to communicate and who are also in an active war zone.
2. Being fired for being “too old” in my mindset about how to do things. I had just turned 40 and my boss was 24 and distracted by all the shiny frameworks when all the marketing person needed was a simple off-the-shelf CMS-based site to publish company offers.
3. Jumping into the middle of a HUGE clusterfuck of thousands of Slack channels, wikis, and Jiras and an outmoded content management system while trying to learn the ropes from a guy who has no time to teach properly and then who abruptly leaves the company with scant documentation on everything that he held mainly in his own head. And there was no way I.T. was going to allow him to have the ability in Zoom to make a video of his training sessions, for no discernibly good security reason at all.
4. Working for only 9 months at two separate companies for two separate frat dudes who could have been clones of each other and whose egos made them into seagull managers* in every sense.
5. Being told by a new employer that they’re hiring me to be the head of their new web team only to find myself shuttled off to obscure contractor roles at MegaCorp Inc and AcmeCorp Inc.

I have 17 more years of this shit ahead of me before I can retire.

*If you haven’t heard of this: Someone who flies in, makes a lot of noise, shits all over everything, and flies out leaving everyone else to clean up the mess.

I swear to god, the next time someone brings in sh*t to a meeting again that's totally off-topic, I'll grab a nerf gun and turn this place into a f*cking war zone!

Okay. Here's the ONLY two scenarios where automated testing is justified:
- An outsourcing company who is given the task of bug elimination in legacy code with a really short timeframe. Then yes, writing tests is like waging war on bugs, securing more and more land inch after inch.
- A company located in an area where hiring ten junior developers is cheaper than hiring one principal developer. Then yes, the business advantage is very real.

That's it. That's the only two scenarios where automated testing is justified. Other such scenarios doesn't exist.

Why? Because any robust testing system (not just "adding some tests here and there") is a _declarative_ one. On top of already being declarative (opposed to the imperative environment where the actual code exists), if you go further and implement TDD, your tests suddenly begins to describe your domain area, turning into a declarative DSL.

Such transformations are inevitable. You can't catch bugs in the first place if your tests are ignorant of entities your code is working with.

That being said, any TDD-driven project consists of two things:
- Imperative code that implements business logic
- Declarative DSL made of automated tests that also describes the same business logic

Can't you see that this system is _wet_? The tests set alone in a TDD-driven project are enough to trivially derive the actual, complete code from it.

It's almost like it's easier to just write in a declarative language in the first place, in the same way tests are written in TDD project, and scrap the imperative part altogether.

In imperative languages, absence of errors can be mathematically guaranteed. In imperative languages, the best performance (e.g. the lowest algorithmic complexity) can also be mathematically guaranteed. There is a perfectly real point after which Haskell rips C apart in terms of performance, and that point happens earlier on than you think.

If you transitioned from a junior who doesn't get why tests are needed to a competent engineer who sees value in TDD, that's amazing. But like with any professional development, it's better to remember that it's always possible to go further. After the two milestones I described, the third exists — the complete shift into the declarative world.

For a human brain, it's natural to blindly and aggressively reject whatever information leads to the need of exiting the comfort zone. Hence the usual shitstorm that happens every time I say something about automated testing. I understand you, and more than that, I forgive you.

The only advice I would allow myself to give you is just for fun, on a weekend, open a tutorial to a language you never tried before, and spend 20 minutes messing around with it. Maybe you'll laugh at me, but that's the exact way I got from earning $200 to earning $3500 back when I was hired as a CTO for the first time.

Good luck!