Of course. Just this one preseason game has definitively told us numerous things:
1.) Whoever that Martinez guy is, he sucks.
2.) Denis is fitting in nicely with the team.
3.) Messi's blond hair can be spotted from orbit.
4.) Vidal would probably get bullied out of his sandwich at the park by a couple of pigeons.
5.) Mathieu is getting old.
6.) Alena is probably the best prospect we've had since the Pep era.
7.) Camara might be a solid LB option when our backs are against the wall.
And we've still got a few games to go. I'd almost go as far as to say games like this are more important from a spectator standpoint than the average demolition of Rayo.