Proving that the gb is led by god is i think the deciding factor for you. Firstly the gb do not want you to prove it ( that takes personal study / investigation ) the gb want you to accept it unconditionally or your rejected. As for following rules..who's rules ? Its the rules as laid down by the interpretation of the so called spirit led.,but not inspired gb?...once again think anything to the contrary and you will be rejected even although they can alter or completely change doctrine to suit themselves ( eg..generation teaching, faithfull slave etc)
Science does not 'gloss over' consciousness or how life came about but endeavours to find answers without the fall back religious version of god done it after all if you accept that answer you're left with the problem of gods existence with no fall back position of god done it (unless you think there were other gods who brought the current god into existence and that's a never ending circle).