13.1 Risk analysis as a decision support tool13.2 Risk is more than the calculated probabilities and expected values13.3 Risk analysis has both strengths and weaknesses13.4 Reflection on approaches, methods and results13.5 Limitations of the causal chain approach13.6 Risk perspectives13.7 Scientific basis13.8 The implications of the limitations of risk assessment13.9 Critical systems and activities13.10 On the difference between risk as seen from the perspectives of the analysts and management13.11 Conclusions