2004-07-02 - Extracted and expanded the pole and barn paradox's discussion of color to its own page. (Note: with this page, I began using PNGs regularly.)
2004-07-29 - Rewrote part of the Visualizing 4D page and improved some illustrations.
2004-08-30 - Added a section for mathematics, and moved some existing pages into it.
2004-08-30 - Added pages on the torus's curvature and geodesics. (Note: first use of MathML.)
2004-08-30 - Declared this site's emancipation from obsolete Web browsers (e.g, those which can't handle PNG alpha transparency, generated content, and MathML). I will provide backward compatibility if possible.