The limitation of phenomenology is that while you can 'suspend the natural attitude' you cannot suspend the need to act which arises from it. How do you know when to act and what to do? Any imperative that succumbs to the suspension is probably not a real imperative - it is rather what's left over, or better, what breaks through such postures. Call it a call. How to hear the call and to know what authority resides in it is subject to a certain discipline, but whatever that is, it has little in common with phenomenology, or indeed with philosophy of any kind. The post-modern status afforded to 'the other', defined in some positive or general way, is certainly inadequate as well.