casus

No. The share price is the latest price someone purchased that share for. It's just a metric. Someone did literally spend $700 and gave it to someone else in exchange for one "share". Now, you may call a "share" just a piece of air--but it is something that has value. The money for it, however, comes out of my pocket and is definitely not thin air.

"a small app built on ec6/7 babel, npm, jspm, system.js, aurelia, gulp, etc"

Part of the problem with the Javascript ecosystem is that you have to use so many different tools/libraries to create a "simple" app.

Could someone elaborate on the use-cases that rethinkdb tries to solve?

As a DB newb, what are the advantages of rethinkdb vs. other NoSQL DBs like Mongo. Why and where would I use rethink instead of an SQL DB like postgres?