Offside as a physics measurement

7:27>> I I think a lot of people would like to know. >> Right? >> because this is also something that's relatively newish, the semi-automated technology. >> Yeah, yeah. And And it it like from just a mental perspective, it didn't really make sense to me. So, I'm going to lay out the argument here, okay? So, offside depends on two things. Where the player is compared to the other players. So, where the players are. And also, when the ball was kicked, right? Because it's the placement of the players when somebody made the pass, okay? >> Yep. >> So, let's go into what the errors are in each of those measurements, okay? The impact or the contact time when I'm like kicking a ball, the the passer's foot in the ball, that's going to be approximately

8:08um a hundredth of a second, okay? So, 10 milliseconds. Now, a player that's making a run, let's say that's sprinting at his like peak velocity. In that case, it wasn't peak velocity, but let's just imagine, right? At its peak velocity, he's going to be going like 10 m/s. Rough ballpark, right? Roughly. Um And so, while the passer is making contact with the ball over that 10 milliseconds, the player will have moved 10 cm. That should be like it's Do you understand? So, so you're not it's when the when part is ill-defined by 10 milliseconds, which means the where part

8:49should be if you knew exactly where the player was, it would already >> be >> be ill-defined by 10 cm, >> [laughter] >> okay? But, I don't even think that that's that's And And this is this is this is um hedging on the fact that I know exactly where the players are. >> Right. >> That again, I don't understand. Because you've got like from my camera perspective, right? Um the the error in the cameras should be another few inches. So, that's only going to add to that error budget. Um