Right, but remember snake charmers do it sitting down, there is very little, "hip movement"!. Snake charming has more to do with way the flute is moving! In hand charming its about how the hand is moving mimicing another snake. Some use head movements. It's usually one part of the body, a part that is about the same size of the snake, and can mimic the snake's movements.
http://www.youtube.com/watch?v=xVEhnoYJtokToo much movement, and the snakes will still strike! Snake charming is something that takes ages to learn starting from
childhood (training at that age is overcoming fear of snakes).
Here is a charmer that uses his knee (and notice the snake does try to strike, before the music and controlled movement starts)!
http://www.youtube.com/watch?v=6gScBzmKXTEFor that matter, once the music ends, the snakes are no longer 'charmed'. So Rosella would never have been able to walk by!
It's not a 'realistic puzzle', its based more on a common misconception and old wife's tale!
That's what I think makes the two snake puzzles interesting! One is based more on an old wives' tale (but isn't realistic), the other has its basis in the logic of reality and snake biology (ignoring another old wives' tale about snakes not being able to 'hear').
I'd liken this to a Popeye solution! The idea in Popeye is that spinach gives him super powers, because of a high content of 'iron' in spinach! However, its now known that spinach does not have a noticeable amount of iron in it (no more than any other green leafy vegestable). How did this happen? Well apparently when a nutritionist was writing about spinach, he placed the decimal in the wrong polace, exaggerating the iron by something like a factor of 30! Other health concious people latched onto the mistake, thinking it was real! So now its believed by many people, even though it is more of an urban legend!