21.   There should be a mechanism for feeding this information back to the designers so that the succeeding system designs will avoid these problems.

22.   There were no mechanisms aboard the bell, but the ship herself had powerful engines.

23.   There would be mechanisms to enable the Board to monitor the quality of service provided.

24.   Unfortunately, attractive as such mechanisms are, direct evidence for their involvement is very weak.

25.   There is no mechanism in place for enforcing the new law.

26.   There is no mechanism to enforce user involvement and it is therefore often ignored or at best lip-service paid to it.

27.   In short, if there are indeed innate or instinctive psychological mechanisms which are passed on genetically, then these take distinct social forms.