Vladimir_Nesov comments on Time turners, Energy Conservation and General Relativity

[Vladimir_Nesov]

But if you give up on General Relativity, quite a few things will unravel, like all four Newton’s laws.

Ch 61:

“Weasley says that rockers use a special kind of science called opposite reaction, so the plan is to develop a jinx which will prevent that science from working around Azkaban.”