A week with an iPad has shown me how poor presentations and other documents get rendered on a PC (or a Mac). Leaving the touch screen aside, and even for a PDF viewer, navigating between pages is incredibly slow and the borders of the screen are packed with distracting menus.Maybe this can all be brought back to the roots of these applications: they were designed for editing text line by line, changing data cell by cell. Each page is built up real time from its components. Editable text gets pet in the right font, the right size, aligned, images are scaled to the right size, colors added.