https://content.pivotal.io/blog/should-that-be-a-microservice-keep-these-six-factors-in-mind
http://neuralnetworksanddeeplearning.com/chap4.html
https://www.npr.org/sections/health-shots/2019/04/18/713887452/high-deductible-health-policies-linked-to-delayed-diagnosis-and-treatment
https://www.tunetheweb.com/blog/writing-a-technical-book-for-manning/
https://larrysanger.org/2019/04/vendors-must-start-adding-physical-on-off-switches-to-devices-that-can-spy-on-us/
https://heartbeat.fritz.ai/opencv-python-cheat-sheet-from-importing-images-to-face-detection-52919da36433