This comment from Zmetta [1] does a good job of explaining the physics without attempting to reduce them to an ad-hominem attack. [1] https://news.ycombinator.

This comment from Zmetta [1] does a good job of explaining the physics without attempting to reduce them to an ad-hominem attack. [1] https://news.ycombinator.com/item?id=5743500 https://news.ycombinator.com/item?id=5743500 Edit: typos