Even if abiogenesis is common, the transition from simple to complex cells is incredibly uncommon. As far as we can tell it only happened on earth once in 4 bil

Even if abiogenesis is common, the transition from simple to complex cells is incredibly uncommon. As far as we can tell it only happened on earth once in 4 billion years. f_l may be 0.1 but f_i is almost certainly multiple orders of magnitude smaller.