This complex work honors the artist's most important tool,her hands.

VOA: special.2009.11.04

"Just as we are learning about these exciting new complex tool behaviours, the chimps that are showing us these behaviours are under danger from logging, poaching and Ebola, " she explained.

BBC: Chimps craft ultimate fishing rod

Life insurance is a complex financial tool.

FORBES: Nothing is for Free, Especially Not Life Insurance

In the non-profit sector especially, knowing what one is getting out of a tool, tactic or strategy can be especially complex.

FORBES: The Secret to Measuring Social Media: An Interview with Beth Kanter