As botanist, I would say Dr. Helen Wu is like a rare flower in a mystical garden. Her lovely and generous spirit is immediately apparent, as is that of her helpful and knowing assistants. Like a good witch, she dispenses her magic with evolutionary knowledge & expertise. With one look at those shade-throwers cataracts, she knows exactly what to do to help her fellow garden citizens .. and Voila! With one wave of her wand, we can now see our way back home. And now once again, we can view our lush green world with all its perennial surprise and joys divine. Thank you,Dr. Wu.