Strange Logic in ArcBatchJob

catch (NetarkivetException e) {
                        // Our exceptions don't stop us
                        success = false;

                        // With our exceptions, we assume that just the
                        // processing of this record got stopped, and we can
                        // easily find the next
                        handleOurException(e, arcFile, arcFileIndex);
                    } catch (Exception e) {
                        success = false; // Strange exceptions do stop us

                        handleException(e, arcFile, arcFileIndex);
                        // With strange exceptions, we don't know
                        // if we've skipped records
                        break;
                    }