However M1 does not causally effect P1 ( i.e. , M1 is a consequent event of P1 ) .
P1 realises M1 and P2 realises M2 .
M1 does not causally effect P1 ( i.e. , M1 is a consequent event of P1 ) .
P1 realises M1 and P2 realises M2 .