Quote from Miles Tinker, renowned for his landmark work, Legibility of Print, performed scientific studies on the legibility and readability of all-capital print. His findings were as follows:
All-capital print greatly retards speed of reading in comparison with lower-case type. Also, most readers judge all capitals to be less legible. Faster reading of the lower-case print is due to the characteristic word forms furnished by this type. This permits reading by word units, while all capitals tend to be read letter by letter. Furthermore, since all-capital printing takes at least one-third more space than lower case, more fixation pauses are required for reading the same amount of material. The use of all capitals should be dispensed with in every printing situation.
But it’s not in all caps it’s just bold face type isn’t it?
Edit: Oh maybe he’s talking about the type on the green board. Maybe he’s right. All most no one pays any attention to it… Leaving those who try to help other people handicapped by having to do so with little or no information.