Why is neurosurgon important?

Why is neurosurgon important?
Wood T.J. Singh
Weights Eric Bavaro
Tape ITEA 6th period
Pouch
Strings(tied to small axle, attach pouch to small ring)
Small metal axle(used to hold and release to launch)
Golf ball(covers spike at top of arm)
Metal spike(at top of arm)
Metal rings(hold up weight and have axle inserted into them and attach strings to the arm)
Large metal axle(attaches arm to the supports on it sides.)
Plastic covers(make sure arm doesn't move left or right)
Medium sized axle used to hold weights to the arm.
Supports on sides(hold arm up)
Base board.