Make big plans; aim high in hope and work, remembering that a noble, logical diagram once recorded will never die.

One is the logical diagram known as Porphyry's Tree, which classifies the kinds of being.

Copies of the logical diagrams, physical cabling layout and test results will be provided to IST.

Make big plans,' he said, 'Aim high in hope and work, remembering that a noble, logical diagram, one recorded, will never die but long after we are gone will be a living thing asserting itself with ever-growing insistency.

Compiling the multiple contributing factors and their interrelationships into a single logical diagram in this way helps analysts understand how and why the event took place and pinpoints problem areas that can be addressed to improve system safety.

The Evaporating Cloud (EC) - also referred to in the literature as "the cloud", or as a "conflict resolution diagram" - is a logical diagram representing a problem that has no obvious satisfactory solution.