new pipelets loop

pipelets_loop.fs

    let computeAndRoute data routes = async{data |> transform |> router <| routes}

    let mailbox = MailboxProcessor.Start(fun inbox ->
        let rec loop routes = async {
            let! msg = inbox.Receive()
            match msg with
            | Payload(data) ->
                ss.Release() |> ignore 
                Async.StartWithContinuations(computeAndRoute data routes, ignore, errors, ignore)   
                return! loop routes     
            | Attach(stage) -> return! loop (stage::routes)
            | Detach(stage) -> return! loop (List.filter (fun x -> x <> stage) routes)
        }
        loop [])

Did he mention why he recommended it? Is it better within the agent to behave in a more synchronous manner? What about deadlocks? I know those are possible when calling .Result on a Task.