Within the confines of my workshop I can come up with an idea, test it and have the final finished polished piece in my hands by the end of the day (or the end of the week if it is a more complicated project). In architectural terms - I just broke the sound barrier.
Mobius Bridge, Bristol by Hakes Associates, final design model 2004
Mobius Bridge, Bristol by Hakes Associates (with Buro Happold Engineers),
wind model testing 2010