Full Idea
Because it makes no difference to exchange the time variable t with its contrary -t, in the fundamental laws of physics, any process can be described as going either backwards or forwards in time, without violating those laws.
Gist of Idea
Any process can go backwards or forwards in time without violating the basic laws of physics
Source
R.D. Ingthorsson (A Powerful Particulars View of Causation [2021], 4.13)
Book Reference
'Oxford Handbook of Philosophy of Time', ed/tr. Callender,Craig [OUP 2013], p.79
A Reaction
A few philosophers read a lot into this, but I don't. The inverse scenario may not breach the laws of physics, but it does involve time going backwards, which I think we can skip for now. Entropy would be interesting. Can information flow backwards?