At productvision.org, I responded to a compelling post by Josh Porter called Activity-Centered Design about which frame is the best to use when conceptualizing and designing products.
Josh was toying with activities as the core concept. A commenter suggested that user goals should be the operative concept, in keeping with goal-directed design. I posited that stakeholder needs are the most powerful frame for understanding and envisioning products.
Check it out: Picking a frame: Activities vs. Goals vs. Needs.

