File talk:Three-tiers-intro.jpg

Caption doesn't match the chart
Given the ongoing changes and discussion of three vs. four tiers in the article that uses this diagram, perhaps the caption for the chart shouldn't specifically mention the number of tiers. As it currently stands, the caption says three tiers but the chart shows four. --Peculiar Investor 06:59, 31 December 2016 (MST)
 * Also, can the file be produced with a transparent background, which will render better on the wiki. --Peculiar Investor 07:00, 31 December 2016 (MST)