The Will and the Instrument
The success or failure of any work of architecture or civil engineering is contingent on the quality of both who commissioned and who executed it. Perhaps a better way to describe them is the Will and the Instrument.
Once both are in place a creative synthesis takes hold. The Instrument may lead to solutions beyond the Will’s original intentions and the willingness to go along contributes to what is built. Ultimately the Will is due all the praise or all the blame because the Will selected the Instrument.
The Instrument, being the creative force is consequently easier to identify; it is as well to remember that it could not have created anything without having been chosen by the Will.