A Dutchman, Known to Utilize a dutchman or Two

In woodworking, dutchman is an ad hoc process, tool or material that is used in an impromptu manner; e.g. a shim to allow space when conducting a table, chair, stool or cabinet. 

Ther are a few specialities in the Dutch paradigm: writers.  (Hans Christian Andersson), artists (Vincent Van Gogh and a distant maternal relation to me,  Rembrandt), nautical (Dutch were mad seafarers during colonial times) and financial (first international stockmarket 1602).

I know naught about woodworking, craftmanship,  et al. My Dutch Core Competency lay in the financial arena. Id est, my bailiwick is investments. Principally equity and equity derivative devices.