Author here. > How can we know he used Mongo properly or not? You don't. I don't. This is just my story where I'm clearly not a junior but had a ton of proble

Author here. > How can we know he used Mongo properly or not? You don't. I don't. This is just my story where I'm clearly not a junior but had a ton of problems with mongo. >Choosing Mongo because you don't know SQL doesn't seem valid Valid is such a strange word here. People choose technologies based on their current skills all the time. If you've never encountered that kind of decision before then you need more experience.