However, sometimes you should trust your pitcher and just ask how he feels instead of living by the almighty pitch count. For some pitchers it often way overrated.
Riiiiiight.... I can see it now:
Dusty Baker, Manager, to young kid: "Hey, how you doing out here...need me to take you out?"
Young Stud Pitcher: "Yeah, Coach, I'm really tired. And I've had slight soreness in my arm after my last couple starts. I think it would be best for my long term development for me to come out now."
C'mon... Join us here on Planet Earth and realize that the typical mentality of an athlete is to never, ever, ever "wimp out". Witness Unit not wanting to skip a start, and then ends up on the DL even though he missed his start. Good players just tend not to protect themselves from injury. They want to gut it out. All that stuff...