Technology » Features » Experience. Experience is the product is a three-year old slidecast from Peter Merholz of Adaptive Path. In his slides, he explains the concept of product design in light of user experience and what design features successful products have. Data » Logic » User Interface was an early design approach for software, while now it is more User Interface » Logic » Data. Good development oscillates between those two. Essentially, the slides tell us that we design and develop for more than an artifact, but rather for a whole experience. I find this especially true in game design (again).