This is a review of how various experiences in my career have contributed to my understanding of accounting. I recall the circumstances surrounding several of my efforts towards the development of accounting theories, viz. (1) decision-usefulness theory, (2) activity costing, and (3) market simulation accounting, as well as my excursion into (4) market association research in seeking to validate decision-usefulness theory and (5) a search for the effects of firms\u27 economic environments on the development of enterprise accounting in the 2nd millennium, C.E. I give my impressions of several of the important players in the evolution of accounting thought in the 20th century with whom I was closely associated, such as Vatter, Moonitz, Chambe...