Note for readers - this is a new story, based on the idea of circular runways that's been submitted many times before, but talking about actually building one for real for drones.

Here's a discussion of the main idea:

https://news.ycombinator.com/item?id=13883954

Here are other submission of the same story, and the inventor's rebuttal of some of the criticisms:

https://news.ycombinator.com/item?id=14163971 (Inventor's defence)

https://news.ycombinator.com/item?id=13901392 (submitted video now unavailable)

https://news.ycombinator.com/item?id=13890437

https://news.ycombinator.com/item?id=13885124 (Repeat of 13890437)