It wasn't an architect who did this, but if it had been an architect, it would have been a good day's work: there was a marketing person who convinced Walmart that their products sold better in daylight than electric light. It would have been interesting if an architect had deliberately designed this change with all its spatial consequences in mind, thinking about how the change would multiply across all the square footage of all the roofs of all the Walmarts in the world. It would have been a beautiful trick - a physical, practical, political pleasure.