Sir Declan, sitting with Lord Justices Higgins and Girvan, held that the test applied by the trial judge required no knowledge of the attack until a rendezvous with the gunmen.

BBC: Northern Ireland

No prior knowledge or skills is required.

UNESCO: Introducing the TLSF Dissemination & Training Toolbox

To play, no previous knowledge of proteins, biochemistry or biology is required - all a user has to have is a computer and an internet connection.

BBC: Online game Foldit helps anti-Aids drug quest