`  :::::This raises the question of what level of knowledge should be assumed in Wikipedia articles. Should we assume that readers are completely ignorant, and write ``The Sun is the bright light in the sky.``, or should we assume that they know a lot, so we should discuss nuclear physics and the like?  :::::I used to work as a high-school math and science teacher, so I tend to write in a way that would be appropriate for readers aged about 12 to 19. This does seem to be about right for most readers of Wikipedia. Of course, many readers are older, but still want to learn things that high-school students learn, and there must be some precocious infants, wise beyond their years.  :::::So this would be my advice. Don't try to impart knowledge that would already be known by an average 12-year-old, and don't write anything that would be incomprehensible to an average 19-year-old.  :::::Does that sound reasonable?  :::::  `