Awesome article Marcin. Fast feedback us crucial not just for developers but also for anybody who work. Interesting backstory. I have learnt that doctors who analyze xray of patients diagnozed with cancer do not reslly improve in analization as there is no feedback loop for them. It becomes clear Only after several months it becomes clear the stadium of the patient and this info is not piped back to the doctors. But let's get back to our original topic. I have feedback loops on multiple levels.

1. In my daily work we conduct code reviews and sometimes pair programming. I am working as an SDET so whenever I write a test I try it imeddiatelly, so I have immediate feedback.
2. I drink coffe daily with my friend who is the test manager and we provide feedback for each other mostly about soft skills.
3. I write technical articles and post them, so that is alsova great opportunity for getting feedback. You can find one of my latest articles here: mszeles.com/save-dozens-of-minutes-daily-during-w…
4. I contribute to the open-source community with multiple test related projects. It can be also a good way for getting feedback, but up till now I have not received much. You can check my projects at: github.hu/mszeles

I hope you will find my comment insightful. 😊 Cheers, Miki