◼️Rules of Machine Learning: Best Practices for ML Enginnering
http://martin.zinkevich.org/rules_of_ml/rules_of_ml.pdf
The first rule states "Do not be afraid to launch a product without machine learning". It is suggested that it is better to write the rules yourself, especially when there are few data available for machine learning.
Being able to understand and use machine learning is a necessary condition as a machine learning engineer, but be careful that it is not sufficient condition. The truly important thing is that you can select the optimal method including the heuristic rule base as well.