Technology-Motivated: These are the developers who always want to integrate the coolest new language, framework, or methodology into their projects, sometimes even to the detriment of the project as a whole. These are the trendsetters, but they may not feel comfortable in an enterprise environment.
Problem-Motivated: These are the developers who get most interested in a project if there's a really interesting problem to solve. They like solving puzzles and coming up with clever and elegant solutions. These developers may only be interested in a new technology if it solves a particular problem, and may be business-motivated only if the project presents an interesting problem.
Don't-Give-a-Crap: This is technically a final category, but represents developers with a lack of motivation. You know the type.
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