Full Idea
Physical laws are typically understood as equations, ...but then factors must vary simultaneously, since if one factor varied before the others, there would be a time when the two sides of the equation didn't equate (so Newton's 2nd Law would be false).
Gist of Idea
If laws are equations, cause and effect must be simultaneous (or the law would be falsified)!
Source
S.Mumford/R.Lill Anjum (Getting Causes from Powers [2011], 5.5)
Book Reference
Anjum,R.J./Mumford,S.: 'Getting Causes from Powers' [OUP 2011], p.120
A Reaction
Nice. Presumably this thought seems to require action-at-a-distance, which no one could understand. Science oversimplifes the world. See Nancy Cartwright.