"Oh, I doubt that would happen, other than on the macroscopic scale, of course."
One can therefore ask: does quantum theory allow time travel on a macroscopic scale, which people could use?
Causality appears to us to be reasonably objective to determine on the macroscopic scale.
In this last test, there was no appreciable difference between items at the macroscopic scale.
In fact, the last two levels apply to all matter, at least at the macroscopic scale.
However, on a more macroscopic scale, lather aids in dirt removal.
Point 2 and 3, while still a function of molecular interaction, also depend on what is happening at a more macroscopic scale.
But it's quite another thing on a macroscopic scale.
Then, one can imagine different mechanisms by which a reaction could absorb or emit energy, on a macroscopic scale.
On the everyday macroscopic scale the effect can be made small.