[Climber76]

"If your clutch fails, it can still be driven by starting and forcing gears...also if the clutch cancel switch in the pedal fails."

Comment: You don't need to force gears. AFter accelerating in a gear, you ease the gas until there is neither a positive nor negative load on the tranny. Then you slip into neutral. If there's any pop or clunk when you do this, you didn't have the throttle right. Then you lower the engine speed to the speed required for the next higher gear, and you slide it in. It's just like double clutching without the clutch. Done properly, it causes no damage at all to the transmission.