Defensive formation on 3rd and 16 in Eagles game.

Nolan said
Mesh concepts are east man beaters because there's at least 4 guys crossing each other in pairs and there's a high probability that one side is going to be wide open if any contact is made, regardless of whether the WR makes contact or the DBs run into each other.

It's common, we see it every week across the league. We put ourself in a position to fail with that playcall.

Then why would Philly even be running a Mesh concept on 3rd and 15 since teams mostly play zone on 3rd and 15?

You put yourself in a position to fail when you make the play call that everyone expects you to make every single time. Nothing wrong with mixing it up. And, again, the call would have worked if executed properly.