> It looks like 3/5 of the bar is shaded while 2/5 is not. 3, 2.
7/10 of the bar is shaded and 3/10 is not.

This brings a point up that I think needs to be mentioned. I don't think there is going to be a whole lot of ambiguity in these puzzles. As Claude has said, this was meticulously planned from the beginning. I think that it would be a mistake to assume that 3.14 is "close enough" to pi. I also think that it's probably significant to look at exactly how many pixels are shaded in the bar on #2. If you look at the original image, there is no anti-aliasing on this "status bar", nor is there any on the small numbers around the dials. There is, however, on the symbol in #5, and the text in #'s 2, 3, and 4. It just seems to me that these things are probably planned and should be considered in the solution process.