The first one is very interesting and seems to work on a molecular level.
The second one doesn't interest me at all.
And the third one is very pleasing, though I might have considered posting it another way up...90 degrees anti-clockwise, probably
????? · 2011-04-21: 16:33
Mundane subject? Yes, Marjorie but... Have you ever considered the variety of this invention, the number we use and how important they have become in our society? HuH?? Happy Weekend