Which is why this ridiculous quest for absolute truth in offside decisions is nonsense. Any tolerance like half a yard, daylight or whatever will lead to the same 1mm issues. Either accept stupid 1mm offside decisions and shut up or just stop all this freeze frame, drawing lines nonsense and leave the on-field decisions alone unless they are clearly wrong from real time video footage, as is supposed to happen with every other offence monitored by VAR.
Personally, I have a fundamental problem with applying the concept of absolute certainty to offside decisions.