Spring is like a perhaps hand (which comes carefully out of Nowhere)arranging a window,into which people look(while people stare arranging and changing placing carefully there a strange thing and a known thing here)and
changing everything carefully
spring is like a perhaps Hand in a window (carefully to and from moving New and Old things,while people stare carefully moving a perhaps fraction of flower here placing an inch of air there)and
without breaking anything.
Not as hard or weird as people think. The invention of typewriter made a huge impression o cummings as well as Pound and other Modernists. As much as anything, it broke the traditional line.