The traditional accounting practices adopted by the Topeka plant in 1979 to support mass production are not well-suited for a lean environment. Traditional accounting focuses on minimizing costs and maximizing productivity, while lean accounting prioritizes reducing waste and inventory to improve flow. Lean accounting uses simpler inventory valuation methods that don't require extensive tracking. It also emphasizes pull production triggered by customer demand and reducing days of inventory on hand through improved material flow. Overall, the mismatched goals and approaches of traditional versus lean accounting mean the Topeka plant's 1979 system would not be effective in a lean environment.